Concepts: X

Ideas, aesthetics, movements, and abstractions named in the archive. This section collects the X slice of the category index.

Reference Index

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X-men

X-men is a recurring concept in the Astral Codex Ten archive, appearing 2 times across 2 issues between June 03, 2022 and August 16, 2024. The archive places it in contexts such as "the most well-known fictional example of the mutant archetype: the X-men"; "Like the X-men, the castrati spent their childhood sequestered in special academies"; ""Disney purchased Marvel Comics and took ownership of their characters, including ... X-men and the Avengers"". It most often appears alongside Juggernaut, Mozart, Spider-man.

Article page
X-men
Mention count
2
Issue count
2
First seen
June 03, 2022
Last seen
August 16, 2024
June 03, 2022 · Original source
In the Weird Studies podcast episode which serves as the namesake of this review, University of Indiana Musicologist Phil Ford traces the origin of the modern day mutant archetype back to the castrati, those eunuch singers produced in Italy from the mid-1500s to the mid-1800s. In support of his analysis, Ford cites the numerous similarities between the castrati and what is perhaps the most well-known fictional example of the mutant archetype: the X-men. While X-men are born as mutants, a number of X-men-adjacent superheros are so-called “mutates”, individuals who received their powers through some externally-mediated transformation (e.g. Juggernaut, Spider-man, the Incredible Hulk, Deadpool); similarly, the castrati were not born as mutants but became “mutates” by undergoing castration before puberty. Like the X-men, the castrati spent their childhood sequestered in special academies where they honed their superhuman (singing) powers with rigorous training. The mutant status of both groups made them objects of both fascination and scorn, awe and fear. In a plot twist reminiscent of X-men lore, some castrati managed to rise above their outcast status and obtain great influence as diplomats or more clandestine political operatives (i.e. spies). The X-men comparison (whatever its validity) speaks to the stranger-than-fiction quality of the castrati’s story, a story told by University of Chicago musicologist Martha Feldman in her 2015 book titled simply The Castrato. Feldman jumps around between the different aspects of the history (the biology, the music, the fame, the fortune, etc.) and I will do the same here, but we will begin, as tales of mutants and “mutates” often do, with an origin story.
August 16, 2024 · Original source
Given Marvel Comics, why Silver Age (1961-1965)? I.a. Why Superhero Comic Books? The winner of last year’s Astral Codex Ten book review contest was Brandon Hendrickson. Brandon wrote about Kieran Egan’s The Educated Mind. One of the foundations of Egan’s educational philosophy is that people learn through stories. He believes early education should focus on teaching lessons through myths and legends. This matches my experience. My kids’ favorite podcast is Greeking Out – a very well produced, very entertaining, National Geographic podcast about Greek Legends. Aside #1: When my oldest daughter was three years old she would ask everyone she met “Do you know any myths? Can you tell me a myth?” She especially liked asking people from different places to get myths from their local cultures. Once, she asked the question to a friend of mine who grew up in South Africa, “Can you tell me any South African myths?” He struggled for a minute and then said, “Okay! I have one! Bread never falls butter side down!”. That was not the type of myth she was looking for; nor the type of myth we will be discussing in this review. Every culture has foundational myths. These stories are entertaining and engaging, but they also teach valuable lessons about both what is important in that culture, and how people in that culture are expected to behave (or at least the Platonic Ideal of how they should behave). In the modern, Western world, we have assimilated many of these foundational stories, particularly the Greek myths. My kids definitely know the Greek myths, but they also know elements of Norse mythology, Egyptian myths, stories about Anasi from West Africa and more. More fundamentally my wife and I, while not religious ourselves, have made a point of exposing the kids to the stories from the Bible. It is not politically correct to call Biblical stories “myths”, but they serve the same purpose – shared cultural understanding of the way the world works. My wife grew up without any religion, and when she was in high school, she struggled with the metaphors and religious allegories that were omnipresent in most of the Western canon. In our culture, familiarity with the Bible is important for an educated person – whether they are religious or not – because it is the foundation of so much of the rest of our culture. I believe the other set of mythological stories that are foundational to our culture are – and by this point I am sure you see where I am going here – comic book superheroes. If true, then having more than a surface-level understanding of the most important superhero stories is important in a similar way to that knowing the Bible stories is important. “Do unto others as you would have them do unto you” is an important idea to understand. So is, “With great power comes great responsibility”. I.b. Why Marvel? While there are many independent superheroes that are not owned by major conglomerates, the superheroes who have built our modern foundational myths are currently owned by two corporations. Warner Bros. Discover owns the DC library of superheroes including Superman, Batman and Wonder Woman. In 2009 Disney purchased Marvel Comics and took ownership of their characters, including Spiderman, X-men and the Avengers. Aside #2: Marvel has sold temporary film rights to many of their characters over the years. The most relevant sales started in 1994 when Marvel sold the film rights of X-men and mutants to 20th century Fox, then in 1996, when Marvel went bankrupt, Fox picked up the rights to the Fantastic Four (and New Line picked up Blade). In 1999 Marvel sold the film rights (and live action TV, and animated TV longer than 44 minutes) of Spider-man and related characters to Columbia Pictures (part of Sony) for $7MM. Marvel actually attempted to sell ALL of their remaining Marvel IP film rights to Sony for $25MM, but the top management at Sony was not interested. Sony’s management allegedly told their chief negotiator “Nobody gives a shi*t about any of the other Marvel characters. Go back and do a deal for only Spider-Man). Disney acquired Marvel in 2009, and then Fox in 2019, bringing the two separated packages of characters all back together under one roof (Blade reverted back to Marvel in 2012). Sony still owns the rights to Spider-man but has made a deal with Disney to include some of his films within the Marvel-Disney universe. Marvel sold the film rights of The Hulk to Universal in 1990 and the current status of that agreement is complicated (the consensus is that Marvel now controls the film rights to the character, but Universal owns distribution rights to any stand-alone Hulk film, which could be why Disney let's Hulk co-star in Thor movies, but not vice versa). In the early aughts Marvel wanted to build their own film franchise, but were limited to only using their remaining “B-list” characters – Spider-man, X-men, and the Fantastic Four were all off limits. Fortunately, Kevin Feige, president of production for Marvel at the time, saw a way forward. He convinced Ike Perlmutter, Marvel CEO, to allow for the production of a series of films with the remaining characters begining with Iron Man (2008). Jon Favreau directed and cast Robert Downey Jr as Tony Stark. The film blew away expectations. Kevin’s plan of a series of movies where the characters would interconnect was suddenly feasible. Iron Man was followed by The Incredible Hulk, Thor, and Captain America: The First Avenger. None managed the box office magic of Iron Man, but all were successful enough that the plan stayed on track. In 2012 the characters were all brought together in the first Avengers film, which opened to over $200MM domestically and went on to gross more than $1.5B (which made it the 3rd highest grossing film of all time). Marvel became the first studio to take the interconnected world of their comic books and make the model work on the big screen (for a much larger audience). Once the model was proven to work, other studios tried to duplicate it. Aside #3: Warner Bros’ stumbles with the DC shared universe of Batman, Superman and the Justice League are well known, but that was actually their SECOND attempt at a shared universe. Their first attempt tried to copy the Marvel method more closely. They chose their own B-list hero and set up his first film to allow for a wider mythology. Alas Green Lantern (2011) failed at the box office and we never got stand-alone films about Sinestro (Yellow Lantern), Carol Ferris (Star Sapphire, the Violet Lantern), John Stewart (African American Green Lantern), Kyle Rayner (1990s Green Lantern), Alan Scott (original Green Lantern), or the Blue, Red, and Orange Lantern Corps. At least so far, no studio has successfully created anything with close to the traction obtained by the Marvel Cinematic Universe (MCU). Warner’s DC Extended universe (DCEU) had trifling success, but is being shelved and rebooted for a fresh attempt next year. Universal’s attempt at a “Dark Universe” kicked off with Tom Cruise in The Mummy (2017), but was dead on arrival. Paramount’s attempt to link the Transformers Universe to GI Joe at the end of Transformers: Rise of the Beasts has been appropriately mocked. Sony’s Spider-man films linked to the MCU have been very successful, but their attempt at a stand-alone non-MCU Spider-man universe using Spider-man’s villains as anti-heroes has floundered (mostly succeeding only as a source of memes). Next Mattel will be attempting to build a universe off the success of last year’s Barbie and may include Polly Pocket, American Girl, Hot Wheels, and He-Man and the Masters of the Universe (no word yet on Thomas the Tank Engine, View Master and the Magic-8 Ball, but all are apparently in development). To date, only Marvel has successfully built a “Cinematic Universe”. One potential reason for the MCU’s success is that Kevin Feige built his cinematic universe on the back of the existing interconnected universe of the comics. But those comics were not the first interconnected universe of stories. For that we would need to go back to our foundational myths. The Bible stories mostly interconnect. Adam and Eve flows into Cain and Abel. David and Goliath leads to the Wisdom of Solomon. Greek Myths DEFINITELY interconnect. Supporting characters in one Greek myth have starring roles in their own stories. The Greek pantheon of tales even have their own version of the Avengers. In the Quest for the Golden Fleece, Jason brings together the Argonauts, who included in their number Theseus (who defeated the Minotaur), Orpheus (who braved the underworld) and Hercules himself – all A-list stars in their own “franchises”. Stand alone stories that exist within an interconnected universe are rare in modern media but were common in the ancient myths that have stood the test of time. Only Marvel has successfully created a shared universe that follows the pattern of ancient myths. Only Marvel films have stand-alone stories and protagonists who exist together in an interconnected world. Something about that method of storytelling is deeply pleasing for humans across many cultures. Marvel films are the first and most successful modern version of the mythological universe, and that it is worth spending more time exploring Marvel’s underlying mythology and where it came from. I.c. Why 1961? The origins of Christianity and Judaism (and Buddhism and Hinduism) are very murky. Even Islam is far enough in the past that we only have a very rough understanding of how it came to exist. When scholars want to understand in detail how a new religion is born they are far better to look at Mormonism or, if you accept it as a religion, Dianetics. Similarly, we have versions of Greek myths that have been passed down to us, but we can never know how those myths changed from their first telling to their “final” versions. Were the stories once unrelated, and only later became crafted into a single “universe”? Or were the stories built off each other one by one (“Dad that Golden Fleece story was amazing! Do you know any other stories about the Hercules guy?”)? Or was it something in between? Perhaps the stories all existed independently, but were later crafted together (“Remember that 12-labors story I told you? Actually that was the same guy who was on the Argo!”) Unlike Greek legends, we can know the origin of the Marvel Universe. We can see how it was constructed step-by-step. The people who did it (most importantly Stan Lee, Jack Kirby, and Steve Ditko) are dead now, but they have not been dead for long. We can read the original work, see how it changed over the last 60 years, and we can ask the creators “what were you thinking at the time” (or at least read their answers from old interviews). We can’t always trust what Stan Lee says, but at least we can hear his point of view. No one has a transcript of an interview with Homer, or knows exactly what he was thinking when he called it the “wine-dark sea”. Tl;dr: Why read about Marvel Comic superheroes 1961-1965? Because interconnected mythological stories are very important to cultures, Marvel is the leading contender of the most recent modern mythology, and it originated in the first half-decade of the 1960s. II. How did Marvel Superhero Comics happen? Timely Comics published their first comic book in 1939 and called it “Marvel Comics”. Their most popular World War II comics included Captain America, the Human Torch (an android unrelated to the modern Human Torch except in powers, appearance and name), and Namor, the Submariner. In the early 1950s superheroes became less popular, so Timely changed its name to Atlas Comics and focused on humor, western, horror, war and science fiction stories. But in 1956 DC Comics began re-introducing their Golden Age superheroes and, in the second half of the 1950s, the genre took off again – particularly Superman, whose title, Action Comics, became the number one selling comic in America. Stan Lee, editor and chief at Atlas at the time, wanted to get in on the superhero action. Unfortunately in 1957 Atlas lost its distributor and the company had to rely on “Independent News” to get its comics on newsstands. The complication was that Independent News was owned by “National Periodical Publications”, who also owned DC-comics and did not want Atlas to introduce superheroes to compete with Superman, Green Lantern and the Flash. Independent News agreed to distribute Atlas comics but limited the publisher to eight titles per month, and only in non-super hero genres (like horror, romance and science fiction). Blocked from creating and launching new superhero titles, Stan Lee got creative, and in August 1961 Atlas Comics published Fantastic Four #1. Aside #4: Fantastic Four #1 was on newsstands in August 8th, 1961, but the date on the cover was November 1961. The convention at the time was that the cover date was not the “publication date” but rather the “pull date”. The pull date was the time when the retailer could send back unsold copies back to the publisher for a refund. In fact the retailer did not need to send the entire issue back, just the cover, as it was assumed that comic books could not be sold without the cover, and it saved on postage. This was only relevant because it was great for my dad who was a child at the time. My dad was friends with the kid whose father owed the local pharmacy which meant he had access to every comic book published in the late 1950s as long as he was willing to wait a few months and read it without a cover. Going forward in this essay I will always use the pull dates rather than the publication dates for individual comic book issues as they are far easier to source. If you want to convert pull dates back into publication dates you can subtract roughly two months, but it is inconsistent and sometimes longer, as was the case with Fantastic Four #1. Check out the cover of Fantastic Four #1: To the modern eye this certainly looks like a superhero comic. Four heroes with super powers fighting a giant monster. But in the eyes of publishers in 1961 this looked more like a science fiction adventure comic than something that would go head to head with Superman. Here are the covers of Action Comics (the best selling superhero comic at the time) from the three months leading up to Fantastic Four #1: Notice what they have in common? “Super Rivals”, “Super revenge”, “Super Substitutes”. And all include Superman in his blue and red tights. Fantastic Four’s cover featured super powers, but never used the word “super” and no one was wearing superhero costumes. Fantastic Four, as a superhero story, slipped under the radar because it wasn’t really a superhero story at all. It was a story about four close friends who attempted to fly into space, but then something goes wrong and they crash back to Earth. The experience changes them and they decide they now need to use their new abilities to help the rest of humanity – specifically against monsters who are invading from under the Earth. It is a fantastical science fiction story – not a superhero story. Later in his career Jack Kirby, the illustrator of the issue and co-creator of the Fantastic Four, was asked about his inspiration for the Fantastic Four heroes. He did NOT say Superman – or any superhero. He said Challengers of the Unknown. Challengers of the Unknown was an adventure story co-created by Kirby in Showcase #6 in February 1957. Here is how Wikipedia describes the Challengers origin: When acquaintances miraculously survive a plane crash unscathed, they conclude that since they are "living on borrowed time" they should band together for hazardous adventures. The four—pilot Kyle "Ace" Morgan, daredevil Matthew "Red" Ryan, strong and slow-witted Leslie "Rocky" Davis, and scientist Walter Mark "Prof" Haley—became the Challengers of the Unknown. Showcase #6, and the first appearance of the Challengers of the Unknown, by Jack Kirby Visually the Challengers and the Fantastic Four were similar. Both wore skin tight uniforms with belts and minimal decoration. The Fantastic Four’s relatively simple characterizations were practically pulled from Challengers. Reed takes on the traits of both Kyle, the leader, and Walter, the scientist. Johnny, the Human Torch is the daredevil. The Thing is “strong and slow-witted”. Sue, the only woman on the team, seems like a new addition, but is likely based on June Robbins who joined the Challengers team in Showcase #7, as an “honorary” or “girl-Challenger”. After surviving their respective “miraculous” crashes, both the Challengers and the Fantastic Four band together to help the world. They both travel through space and other dimensions, fighting mad scientists and monsters. The Fantastic Four’s early antagonists were not traditional super villains. In the first few issues they fight monsters from under the Earth (Issue #1), shape changing aliens (#2), and a charlatan who uses hypnotism to steal from his audience (#3). In issue #4 Kirby and Lee re-introduce Namor, the Submariner, one of Marvel’s top IP from the 1940s, and have him kidnap Sue. Only in Issue #5 and #6 (June and August 1962) and do we get a more standard-supervillain when Dr Doom attempts to steal the Fantastic Four headquarters and throw it into space. The next superhero Lee created was even less heroic than the Fantastic Four. In April 1962 (pull date), Marvel published The Incredible Hulk. If it was even a superhero story in disguise it was a very good disguise. The story was a scientific-filtered version of Dr Jekyl and Mr Hyde. It was a pure monster-story with nothing very super about it. Nothing on the cover suggests this has anything to do with superheroes: It is not clear if even Lee at the time thought the Hulk would be a superhero. In Fantastic Four #5 Johnny is reading a “great new comic mag” and mocks the Thing by comparing him to the Hulk. It seems pretty clear at this point that in the Fantastic Four’s world, the Hulk is just a fictional comic book, like in ours (more on that later): The other two superheroes the Marvel introduces in this period have even more subtle introductions. At the time Marvel had a number of generic-sounding titles and told science fiction and fantasy stand-alone stories: Tales to Astonish
By early 1963 it was established that the Fantastic Four, the Hulk and Spider-man all existed together within the same shared universe. But what about Ant Man,Thor and Iron Man? Aside #5: The Hulk comic in Fantastic Four #5 pretty clearly establishes that the Hulk was a fictional character in the Fantastic Four world, but there are other clues that Lee was not thinking about his characters as existing and crossing over in the early days. Both Bruce Banner (the Hulk) and Mr Fantastic fight off global alien invasions in their early issues. In both cases the stories make clear that only Bruce/Reed is smart enough to save the world. No mention is made of the OTHER scientist who saved the world from the alien invasion a few months earlier. Bringing different superheroes from their own titles together was not an idea created by Atlas/Marvel and Lee. That was likely All Star Comics #3 (December 1940) when writer Gardner Fox brought together all the major DC heroes who were not staring in their own independent titles, including Green Lantern, the Flash and Doctor Fate, to create the Justice Society of America (JSA). Batman and Superman cameoed in All Star Comics #7, but generally they were considered too popular to dilute their appearances in ensemble titles. That changed in March 1960 when DC re-launched the idea of a superteam with the Justice League of America and included all of their most popular heroes as the leads – Superman, Batman and Wonder Woman. It was immediately a top seller. The launch of JLA is likely what caused the owner of Atlas to ask Lee to create a ”superhero team comic”. Lee did not have a stable of heroes to bring together, so he had to create something entirely new – The Fantastic Four. But now that Lee DID have a collection of his own heroes AND he had the greenlight to create straightforward superhero comics, he decided to build himself his own JLA. In September 1963 Atlas published two new titles: The Avengers and the X-men. The X-men were a brand new team of all new heroes, but the Avengers were a close parallel to the Justice League. Lee took his existing collection of heroes (except the Fantastic Four and Spider-man) and created an excuse for a team-up. In the issue they individually battle Thor’s brother Loki before coming together to defeat him as a team. They decide that given they all have different powers, they should work together to be unstoppable. The entire formation of the team takes only four panels and is a little corny, but it does its job: While the Avengers were a clear copy of the Justice League, Stan Lee put his own spin on it. While the JLA superheroes all had roughly the same personality and no real inter-team conflict, Lee made his heroes very distinct – almost caricatures – and there was PLENTY of inter-team conflict. The Hulk in particular abandoned the team in the second issue and was the primary antagonist by Avengers #3. Avengers #3 (January 1964) is itself the final step in connecting all of the Marvel heroes together. The Hulk has gone missing and the rest of the team wants to find him. Iron Man uses an “Image Projector” to ask other superheroes around the world if they had seen the Hulk. He visits the Fantastic Four, Spider-man and the X-men. In that same month in Tales of Suspense, Iron Man meets Angel (one of the X-men). The cat was out of the bag. Lee had a new trick to boost sales of all of his titles and he put it to work throughout the year. The first full crossover of the Fantastic Four and the Avengers happens in May (Fantastic Four #26). Daredevil premiered in March 1964 (with Spider-man on the cover, but not in the pages), and crosses over in Amazing Spider-man #16 (September 1964). Dr Strange first appears on the cover of another title in Fantastic Four #27 (June 1964). The Avengers battle the X-men (before teaming up) in X-men #9 (Dec 1964) Atlas was no longer just a collection of comic books about various topics, or even a collection of different flavors of superhero. It was a single shared universe: The Marvel Universe. It wasn’t planned out in advance, instead it happened in stages due more to commercial rather than artistic needs. Basically Stan Lee created the most successful modern mythology because he needed the money. III. Are Silver Age Marvel Comics any good? Well, apart from Amazing Spider-man, which holds up surprisingly well, I would not recommend reading any of them. Even Spider-Man is much weaker than the Ultimate Spider-Man reboot version of the story published 2000-2011. If you wanted to read Spider-Man from the beginning you would likely enjoy that later series a lot more than the original. The other titles vary in quality from “okay” (the Fantastic Four) to “absolute garbage” (Ant Man stories in Tales to Astonish). Which begs the questions, if these comics were so bad, how did they succeed as well as they did? Clearly the comics were “good for their time”. Millions of people bought and read them, and they clearly passed the “test of time”. So does that mean that we are better today at making art than we were back then? Or is art neither better or worse, just “of its time” and people back then would think the Ultimate Spider-man stories from 2000 were unreadable? I will argue the following: The stories were “good for their time”. VERY good for their time. They were much much better than the comic book stories that preceded them, and much better than other contemporary comic book adventures (like those being published by DC)
While the Avengers were a clear copy of the Justice League, Stan Lee put his own spin on it. While the JLA superheroes all had roughly the same personality and no real inter-team conflict, Lee made his heroes very distinct – almost caricatures – and there was PLENTY of inter-team conflict. The Hulk in particular abandoned the team in the second issue and was the primary antagonist by Avengers #3. Avengers #3 (January 1964) is itself the final step in connecting all of the Marvel heroes together. The Hulk has gone missing and the rest of the team wants to find him. Iron Man uses an “Image Projector” to ask other superheroes around the world if they had seen the Hulk. He visits the Fantastic Four, Spider-man and the X-men. In that same month in Tales of Suspense, Iron Man meets Angel (one of the X-men). The cat was out of the bag. Lee had a new trick to boost sales of all of his titles and he put it to work throughout the year. The first full crossover of the Fantastic Four and the Avengers happens in May (Fantastic Four #26). Daredevil premiered in March 1964 (with Spider-man on the cover, but not in the pages), and crosses over in Amazing Spider-man #16 (September 1964). Dr Strange first appears on the cover of another title in Fantastic Four #27 (June 1964). The Avengers battle the X-men (before teaming up) in X-men #9 (Dec 1964) Atlas was no longer just a collection of comic books about various topics, or even a collection of different flavors of superhero. It was a single shared universe: The Marvel Universe. It wasn’t planned out in advance, instead it happened in stages due more to commercial rather than artistic needs. Basically Stan Lee created the most successful modern mythology because he needed the money. III. Are Silver Age Marvel Comics any good? Well, apart from Amazing Spider-man, which holds up surprisingly well, I would not recommend reading any of them. Even Spider-Man is much weaker than the Ultimate Spider-Man reboot version of the story published 2000-2011. If you wanted to read Spider-Man from the beginning you would likely enjoy that later series a lot more than the original. The other titles vary in quality from “okay” (the Fantastic Four) to “absolute garbage” (Ant Man stories in Tales to Astonish). Which begs the questions, if these comics were so bad, how did they succeed as well as they did? Clearly the comics were “good for their time”. Millions of people bought and read them, and they clearly passed the “test of time”. So does that mean that we are better today at making art than we were back then? Or is art neither better or worse, just “of its time” and people back then would think the Ultimate Spider-man stories from 2000 were unreadable? I will argue the following: The stories were “good for their time”. VERY good for their time. They were much much better than the comic book stories that preceded them, and much better than other contemporary comic book adventures (like those being published by DC)
Xhosa

Xhosa is a recurring concept in the Astral Codex Ten archive, appearing 2 times across 2 issues between November 07, 2023 and February 29, 2024. The archive places it in contexts such as ""Xhosa killing their cattle for religious reasons""; "Nongqawuse was a prophetess of the Xhosa people". It most often appears alongside UK, @BoyanSlat, @eigenrobot.

Article page
Xhosa
Mention count
2
Issue count
2
First seen
November 07, 2023
Last seen
February 29, 2024
November 07, 2023 · Original source
Consider this my contribution to the world: I think this behavior is about as admirable as men castrating themselves for religious reasons, or Xhosa killing their cattle for religious reasons.
February 29, 2024 · Original source
14: Nongqawuse (born 1841) was a prophetess of the Xhosa people (related to Zulus, South Africa). When she was 15, she claimed the spirits told the Xhosa to kill all their cattle as a sacrifice; in exchange, they would bring utopia and drive away the encroaching British. The Xhosa believed her and killed all their cattle. In the ensuing famine, 75,000 out of 100,000 Xhosa died, and the British easily took over their territory.
x-linked infantile spinal muscular atrophy

x-linked infantile spinal muscular atrophy is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between July 31, 2025 and July 31, 2025. The archive places it in contexts such as "UBA1, which causes a distinct and much rarer condition called x-linked infantile spinal muscular atrophy". It most often appears alongside 23andMe, 23andme, Alex Young.

Mention count
1
Issue count
1
First seen
July 31, 2025
Last seen
July 31, 2025
July 31, 2025 · Original source
…they don’t screen for SMN, which causes 95% of spinal muscular atrophy cases. They only screen for UBA1, which causes a distinct and much rarer condition called x-linked infantile spinal muscular atrophy. Professional organizations publish guidelines for what genes need to be screened in a screening product, and Nucleus does not appear to be following them. In further discussion, Herasight continued with exhaustive criticism of essentially everything Nucleus had ever done down to the smallest detail. Nucleus reports list the same baseline disease risk regardless of patient ancestry, but different ancestry groups should have different risks14. Nucleus’ physician reports sometimes list lower-than-average risk for patients with positive polygenic scores15. Nucleus’ age-based risk tables don’t distinguish between age and cohort effects (is this bad? see footnote16). My favorite critique is that Nucleus wrote a blog post criticizing competing company Orchid… …which included a section on how Orchid is a polygenic selection company, and polygenic selection companies are inherently “sketchy” and “honestly should be illegal”. But Nucleus is also a polygenic selection company! This is like Marlboro attacking Camel on the grounds that cigarettes are addictive and should be banned! Obviously something went wrong here - my guess is AI - and it’s a really bad look, especially when these scientific issues are so hard to litigate, and so many of us will have to go off gestalt impressions of corporate culture. Nucleus states that they validate their models internally and intend to make their results public soon. A Foothill Of The Future It’s hard not to love this technology. Lots of people (and the aforementioned professional organizations) manage anyway, but it’s hard. If this were a single-use medical treatment, delivered by a doctor after someone got the relevant condition, it would be one of the biggest advances of the decade - imagine a drug that cures 10 - 40%17 of breast cancers with no side effects! But in fact, it works for breast cancer, and schizophrenia, and heart attacks, and approximately everything else. The only things comparable are antibiotics and GLP-1RAs. And then there’s the IQ effects. Even after studying the literature, people have wildly different opinions about the importance of IQ. One of the most important debates is to what degree IQ differences are a cause of poverty, a consequence of poverty, or both. I lean towards both - a country with limited access to schools and medical care will have low average IQ, but as a consequence it probably won’t become the next big semiconductor hub. This technology could close half the IQ gap between poor and middle-income countries, or between middle-income and rich. Or it could give rich countries average IQs that have never been seen before, and let us see what kind of O-ring technologies (and new forms of social cooperation) lie just beyond the frontier. (this is the nice quantifiable argument in favor of IQ enhancement, but I find myself more convinced by fuzzier things - how much is it worth to be able to enjoy great art and literature? To fully comprehend what we know of nature, and be able to fully appreciate the mystery of the rest? To have a sense of why society works the way it does, instead of feeling like you’re being blown back and forth by institutions you don’t really understand? Amateur psychoanalysts like to say that the only people who care about IQ are those looking for an excuse to boast about how high their own is, but my experience is the opposite: I care about IQ because I bang up against the limits of my own a thousand times a day, and I hate it. I fantasize about ways to make my children smarter than I am for the same reason a dog confined in a tiny crate might fantasize about getting her puppies adopted out to a nice house with a big grassy yard.) My biggest qualm is that it might not matter. This is such a tiny foothill, flanking such a vast and foreboding range of mountains, that it might be a mistake to care about it at all. Selecting the best of five or ten embryos is not a very effective way to get the genes you want. There are things in the pipeline that will make this look like Hippocrates draining black bile. By the time the first polygenically selected children are adults, they’ll be old news. And then there’s AI. The average age at diagnosis for Type II diabetes is 45 years. Will there still be people growing gradually older and getting Type II diabetes and taking insulin injections in 2070? If not, what are we even doing here? Many people in the transhumanist community are still bullish on this technology. They think - well, there’s still an outside chance that something comes up and AGI takes another few decades. If we can enhance humans to be smarter, healthier, and more determined by the time it arrives, maybe we’ll have a better chance. Or maybe, if there’s a positive optimistic vision of a human-based high-tech future, people will be more willing to delay AI in the first place. I like this argument, but I also think it’s worth stepping back. What’s the point of anything? Why have kids at all in a world that’s changing this fast? Why save for the future? At some point your answer has to be romantic and aesthetic - it’s never been clear whether anything you do matters in any ultimate sense, but you’ve got to act as if it does and hope for the best. From that perspective, this is the most romantic technology of all. You’re not just giving a better life to your kids. Genes travel from generation to generation; you’re giving a better life your grandkids, your great-grandkids and so on to the point 1.77*log₂(population) generations from now when you are the ancestor of everybody and nobody. Somebody in Macaronesia in 3525 AD will avoid getting breast cancer because of you (if there is still cancer; if there are still breasts). Some combination of reasonable cost-benefit analysis and romantic/aesthetic commitments makes me want to have children despite the uncertainty, and the same combination made me sign up to use this technology despite the same. More later on how that’s going. 1I’m slightly mixing up two different things here - Down Syndrome can be detected with an aneuploidy test, but cystic fibrosis takes a more involved PGT-M test. 2There are two separate questions here. First, how much would diabetes risk decline if you selected the embryo with the lowest risk for diabetes - something you have no reason to do, since you have no reason to privilege diabetes risk over risk of any other disease? Second, how much would diabetes risk go down if you selected the embryo with the lowest health risk overall? Genomic Prediction’s their risk calculator calculator shows, seemingly paradoxically, that you get -38% relative risk by selecting against diabetes alone, but -41% relative risk by selecting against everything at once. Over email, they stand by this surprising result, saying that “for a couple of diseases (type II diabetes and CAD), the EHS actually accomplishes a larger risk reduction than the individual predictors. The explanation is that the EHS takes into account multiple PRS of diseases with high comorbidity”. See eg Figure 3 here: …and the section of the post called “Antagonistic Pleiotropy” for more. However, this paradoxical benefit is only true for a few conditions like diabetes - for everything else, selecting on health index does better than you would naively think, but still does not decrease the risk of a given condition as much as selecting against that condition directly. 3That is, new mutations in that particular baby, as opposed to older mutations already present in the parents. 4Conflicts of interest: I have used Orchid’s and Herasight’s products on my own embryos (not the ones used to conceive my existing kids, but for a potential third child), employees of Genomic Prediction and Herasight have been extremely helpful in contributing expertise to ACX posts on genetics, and I might invest in this field at some point (though haven’t done so yet). This post started as Herasight asking me to write about their white paper, then spiraled out of control. There were some unexpected time pressures and the result is that I didn’t get a chance to run everything in Herasight’s white paper by their competitors as thoroughly as I would like. Although I talked to representatives of all four companies profiled here, I feel like this probably reflects Herasight’s perspective better than other companies’, and that this is a major flaw. If other companies have responses, I’ll publish them. Thanks to all companies involved for their assistance on this article. Finally, I am favorably disposed toward Herasight because of how I learned about them: a professor named Jonathan Anomaly got cancelled from Penn for being too gung-ho about genetic enhancement, and used his newfound freedom to join a very-early-stage Herasight, raise their ambitions, and sell everyone (including me) on the idea. I grew up on a diet of books and movies about mad scientists, and I’m a sucker for a story about a guy named Doctor Anomaly pursuing revenge against the small-minded fools who destroyed his career by creating a race of superbabies. 5The version of the tool I looked at said 5.9 points for five embryos, up to 9 points for twenty embryos. The version of the tool on their current said says 5.3 - 9, so they might have recalculated after I finalized this article. 6Used in quotation marks because these scores were fine for the predictive tasks they were applied for - they just weren’t finding genes that directly caused the outcome of interest. 7Conflict of interest notice: this table was originally unadjusted. A representative of Herasight claimed that this was unfair, because each company used slightly different reporting conventions, and offered to correct for this in a neutral way. I retraced their reasoning, confirmed that the correction did not especially benefit Herasight at the expense of other companies, and accepted the correction. The original unadjusted table is below: Herasight was insufficiently comfortable with Nucleus’ methodology to even be willing to posit a corrected value, so I left their self-reported value in gray. 8Zagorsky (2007) says an extra IQ point means $234-$616/year in higher salary. The midpoint of $425 equals $670 in today’s dollars; assuming a forty-year career, Nucleus’ +1 point estimate is worth $26,800 (vs. $9,249 Nucleus cost) and Herasight’s +6 point estimate is worth $160,800 (vs. $53,250 Herasight cost). 9As part of researching this article, I asked all four major companies about their within-family validation strategies. Here are some details: Genomic Prediction discusses their strategy in this paper. The results are complicated to interpret - the within-family numbers often have such wide error bars that they overlap with both the across-family numbers and with zero - but looking qualitatively it seems like most scores on average lose about 25% of their risk reduction ability (though averages might not be the right way to do this, and some might be much more affected than others). Their website reports unadjusted, not within-family validated numbers; GP says they say this clearly on their site (which is true), Herasight counters that they still present their numbers as applicable to embryo selection (which is also true). To get the most applicable-to-embryo-selection numbers, you might want to adjust GP’s stated numbers down somewhat; it’s hard to say exactly how much, but maybe 20 - 25%?
x-risk

x-risk is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between May 01, 2022 and May 01, 2022. The archive places it in contexts such as "They want people who are familiar with x-risk and willing to spend ~3 hours a week". It most often appears alongside ACX community subreddit, Astralcodexten Com, Conjecture.

Reference entry
x-risk
Mention count
1
Issue count
1
First seen
May 01, 2022
Last seen
May 01, 2022
May 01, 2022 · Original source
1: Philip Tetlock (of Superforecasting fame) and his team are running a new tournament that combines forecasting and persuasion. They want people who are familiar with x-risk and willing to spend ~3 hours a week for a few months thinking/talking about it. People selected to participate will get $2,000 to $10,000 (and some people can win $2,000 as a prize just for applying). See here for more information and to apply.
x-risk activists

x-risk activists is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between October 05, 2023 and October 05, 2023. The archive places it in contexts such as "a debate among long-termists, forecasters, and x-risk activists". It most often appears alongside AI Is Centralizing By Default, Let’s Not Make It Worse, AI Pause Will Likely Backfire, AI Policy Institute.

Reference entry
x-risk activists
Mention count
1
Issue count
1
First seen
October 05, 2023
Last seen
October 05, 2023
October 05, 2023 · Original source
Last month, Ben West of the Center for Effective Altruism hosted a debate among long-termists, forecasters, and x-risk activists about pausing AI.
Xanadu

Xanadu is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between September 19, 2025 and September 19, 2025. The archive places it in contexts such as "the philosophy of Xanadu"; "when he revealed himself to know very little about the technical task of building Xanadu"; "Remember, Xanadu wouldn’t only involve links between works—it required hyperlinks". It most often appears alongside 1987, 1988, Adleman.

Reference entry
Xanadu
Mention count
1
Issue count
1
First seen
September 19, 2025
Last seen
September 19, 2025
September 19, 2025 · Original source
compilable "Command Meta Language" Live on stage, in the year 1968, Engelbart started up the NLS, opened a document, and typed some words into it. The words, he said, constituted a statement. And statements made up a file. Engelbart copied, manipulated, saved, and loaded his words and statements and files, zipping around with his newly-invented mouse. He demonstrated his ability to embed documents in one another—images with links to statements, words nested and categorized by one another, files filled with metadata. And then he paused, and the screen went blank. He explained that he and his colleagues at the ARC had been using this system to do their daily work for the last six months. He mentioned that they had, now, six consoles up and running. He showed the crowd a real document, then navigated to a statement within it. “This presentation is devoted to the AHIRC.” “What is the AHIRC?” he asked. Engelbart “froze” the initial statement, clicked on the acronym, and below the words “Augmented-Human-Intellect Research Center” appeared. He kept clicking and freezing, and a trail of nested and related information appeared—a list of funders, a graph of staffing over time, a mission statement. This was hypermedia. These were hyperlinks, he explained. NLS was a hypertext system. The presentation went on for 90 minutes longer, and became known as The Mother of All Demos.2 At around the 75-minute mark, Engelbart shows that two different NLS users could edit a single document simultaneously. While this was extremely impressive functionality, it was achieved with time-sharing—computation was done on a single machine, switching rapidly between tasks—and became infeasible the very next year, when ARPANET was released and the number of machines you could connect to one system grew rapidly. Engelbart’s hypertext system was impressive in its own right, even without collaborativity. And still, little came of it—Andy van Dam, an attendee and revolutionary computer scientist himself, would reflect decades later: “Everybody was blown away … and nothing else happened. There was almost no further impact.” Engelbart’s ideas were just a little too out there. ARC quickly faded into obscurity. In 1972, Engelbart joined an organization called Erhard Seminars Training. EST, or “est” as it was marketed, offered a 60-hour self-improvement course for tech entrepreneurs modeled loosely on Zen Buddhism. Critics suggested that the est course was a mind-control method aimed at raising an authoritarian army. It was quite credibly branded a cult. The founder of est, Werner Erhard, was accused of tax fraud (he fought the claims and won $200,000 from the IRS) and incest (by his daughter, who later recanted). Engelbart served, for many years, on est’s board of directors. His researchers all left for greener, less cult-y pastures, and ARC died with hardly a whimper. No one really wanted to associate with Engelbart. His crackpot theories about an internet modeled after the memex fell into disrepute, and, if he was remembered at all, it was for the invention of the mouse. No one cared anymore about the memex, or hypertext. 3. Hyper-dreams of Hyper-everything Well, one man cared. Ted Nelson was born in 1937 to two twenty-year-olds, Ralph Nelson and Celeste Holm. His parents divorced in 1939, leaving him to be raised by his grandparents. Both Nelson (the elder) and Holm would go on to extremely-successful film careers: the former became an Emmy-winning director; the latter an Oscar-winning actress. And, at first, Ted seemed to be following in their footsteps. As a philosophy major at Swarthmore College, he produced a film called The Epiphany of Slocum Furlow, which he described as “a short comedy about loneliness at college and the meaning of life.”3 Nelson also claims to have “[d]irected [and written] book and lyrics for what was apparently the first rock musical” in his junior year at Swarthmore. Thankfully, his interest in a career as an entertainer soon waned, and Nelson went off to study sociology in grad school—first at the University of Chicago, then at Harvard. Nelson took a computer class at Harvard, in 1960, and “[his] world exploded.”4 He realized the incredible power of computing, quickly intuited that these new machines could be generally applied to everything, and founded Project Xanadu.5 Initially, Xanadu’s scope was pretty limited. Word processors weren’t around yet, but Nelson wanted to build something strikingly similar: he wanted to write a program that could store and display documents, with version histories and edits all stored and displayed at the same time too. Later, Nelson would call this version-history feature “intercomparison.” (Strange coinages will be a… theme; I’m just trying to get you ready.) Nelson began working on an implementation, but his feature wishlist grew quickly, and he didn’t really know what he was doing, so in 1965, he sought help. He prepared a talk for the Association for Computing Machinery, and dropped, quite frankly, a bomb on the audience: The kinds of file structures required if we are to use the computer for personal files and as an adjunct to creativity are wholly different in character from those customary in business and scientific data processing. They need to provide the capacity for intricate and idiosyncratic arrangements, total modifiability, undecided alternatives, and thorough internal documentation. The original idea was to make a file for writers and scientists, much like the personal side of Bush's Memex, that would do the things such people need with the richness they would want. But there are so many possible specific functions that the mind reels. These uses and considerations become so complex that the only answer is a simple and generalized building-block structure, user-oriented and wholly general-purpose. The resulting file structure is explained and examples of its use are given. Ted Nelson was building the memex. Of course, he wasn’t a very technical guy, and so his talk mostly focused on the philosophy of Xanadu, not its implementation. He commented (emphasis mine): There are three false or inadequate theories of how writing is properly done. The first is that writing is a matter of inspiration. While inspiration is useful, it is rarely enough in itself. “Writing is 10% inspiration, 90% perspiration,” is a common saying. But this leads us to the second false theory, that “writing consists of applying the seat of the pants to the seat of the chair.” Insofar as sitting facilitates work, this view seems reasonable, but it also suggests that what is done while sitting is a matter of comparative indifference; probably not. The third false theory is that all you really need is a good outline, created on prior consideration, and that if the outline is correctly followed the required text will be produced. For most good writers this theory is quite wrong. Rarely does the original outline predict well what headings and sequence will create the effects desired: the balance of emphasis, sequence of interrelating points, texture of insight, rhythm, etc. We may better call the outlining process inductive: certain interrelations appear to the author in the material itself, some at the outset and some as he works. He can only decide which to emphasize, which to use as unifying ideas and principles, and which to slight or delete, by trying. Outlines in general are spurious, made up after the fact by examining the segmentation of a finished work. If a finished work clearly follows an outline, that outline probably has been hammered out of many inspirations, comparisons and tests. Between the inspirations, then, and during the sitting, the task of writing is one of rearrangement and reprocessing, and the real outline develops slowly. The original crude or fragmentary texts created at the outset generally undergo many revision processes before they are finished. Intellectually they are pondered, juxtaposed, compared, adapted, transposed, and judged; mechanically they are copied, overwritten with revision markings, rearranged and copied again. This cycle may be repeated many times. The whole grows by trial and error in the processes of arrangement, comparison and retrenchment. Nelson recognized that the creation of knowledge is cyclical, recursive, self-referential. And he figured that our computer systems should accept and reflect that process: If a writer is really to be helped by an automated system, it ought to do more than retype and transpose: it should stand by him during the early periods of muddled confusion, when his ideas are scraps, fragments, phrases, and contradictory overall designs. And it must help him through to the final draft with every feasible mechanical aid—making the fragments easy to find, and making easier the tentative sequencing and juxtaposing and comparing. How do you design such a system? To navigate intuitively within complex file systems, between document versions, and across source materials—to access all the scraps and fragments writers need to write—you would need to establish what Vannevar Bush called “tracks.” You would need to connect and save different ideas, linking them together. That was it—you needed links. Nelson went further, though—it wouldn’t do to simply have links to all the other files, a writer needed to see the other files before him, needed them to be brought up and displayed alongside his current work on demand. The links needed to contain their targets within themselves—so Nelson called them hyperlinks. And he called text embedded with hyperlinks hypertext, and movies embedded in his structure became hyperfilms, and so on. Nelson wanted us using computers to write and create self-referential, intricately-interconnected (“intertwingled,” as he’d later put it), eminently-accessible hypermedia. And recall, in 1965, state-of-the-art computing looked like this. Ted Nelson was thinking far, far ahead. Maybe too far ahead. Conference attendees were initially excited about his idea, but when he revealed himself to know very little about the technical task of building Xanadu—or even whether it was possible at all—interest evaporated. 4. Failing to Develop Xanadu But Nelson was all in. He would later write, “This is not a technical issue, but rather moral, aesthetic and conceptual.” Nelson loved knowledge and connection and abstraction—mere technical details wouldn’t stop him from building the best possible computer system for producing and consuming information. He met Doug Engelbart in the mid 60s, forming a friendship with the only other man taking hypertext seriously at the time, and hopped around unhappily between various academic and scientific appointments. At one point, he and Andy van Dam worked together and produced the Hypertext Editing System—released in 1967, just before Engelbart’s NLS. It was the first computer application to ever have an “undo” button—Nelson claims to this day that he invented it (and the “back” button). Shortly thereafter, Nelson’s wife left him. In his 2010 autobiography, he writes, “She, reasonably, wanted a Nice Life; women want that sort of thing.” They had a son, whom Nelson continued to visit regularly. “Debbie has been a friend and great support all these years,” Nelson adds. “[S]he believed in me.” Nelson gave a talk at Union Theological Seminary in 1968 that included this slide, which Nelson considers “the first depiction of what the personal computer turned out to be.” “About six years later they started building computers like this at Xerox PARC.” Around the same time, Nelson claims to have called Vannevar Bush and told him about Project Xanadu. Bush “wanted very much to discuss it with” Nelson, but Nelson “hated him instantly [because] he sounded like a sports coach” and never contacted him again. This, of course, proved to be extremely self-destructive (though I can’t honestly say I would’ve done otherwise). Because Xanadu was as good as dead. No one would give him the money he needed to work on it, especially not after Doug Engelbart poisoned the idea of hypertext. Nelson went where there was funding, working briefly on an early word processor called Juggler of Text (JOT). …And then he lost investment, stopped working on the project, and moved to Chicago, where he’d been offered a job teaching at the University of Illinois, to start work on a book. He would call it Computer Lib. In fact, he started work on another book at the same time, called Dream Machines. By the time he completed each of them, in 1974, ARPANET had been released, and his vision for Project Xanadu had evolved. He published the two works together—Computer Lib was his lamentation over the industry’s disdain for hypertext, and Dream Machines was Xanadu’s manifesto. Nelson designed and printed the book himself. Its pages mostly look like this: Self-referential, multimedia, creative, and fun—they were a blueprint for the internet he was building. In the Dream Machines half, Nelson writes, “The real dream is for ‘everything’ to be in the hypertext. Everything you read, you read from the screen (and can always get back to right away; everything you write, you write at the screen (and can cross-link to whatever you read).” In one section Nelson asks himself, “Can It Be Done?” His answer: “I dunno.” Remember, Xanadu wouldn’t only involve links between works—it required hyperlinks, which as Nelson understood them, would need to contain the targets in themselves. (Eventually, Nelson would give these embeddings a new name—“transclusions”—and hyperlink came to simply mean “link between hypertext files.”) Every link would run both ways, each hypertext file would know exactly which other files were linked to it and how. This introduced a few problems, in the new interconnected ARPANET age: How do you keep track? Where’s the metadata stored? Can you afford enough space for it all?
“About six years later they started building computers like this at Xerox PARC.” Around the same time, Nelson claims to have called Vannevar Bush and told him about Project Xanadu. Bush “wanted very much to discuss it with” Nelson, but Nelson “hated him instantly [because] he sounded like a sports coach” and never contacted him again. This, of course, proved to be extremely self-destructive (though I can’t honestly say I would’ve done otherwise). Because Xanadu was as good as dead. No one would give him the money he needed to work on it, especially not after Doug Engelbart poisoned the idea of hypertext. Nelson went where there was funding, working briefly on an early word processor called Juggler of Text (JOT). …And then he lost investment, stopped working on the project, and moved to Chicago, where he’d been offered a job teaching at the University of Illinois, to start work on a book. He would call it Computer Lib. In fact, he started work on another book at the same time, called Dream Machines. By the time he completed each of them, in 1974, ARPANET had been released, and his vision for Project Xanadu had evolved. He published the two works together—Computer Lib was his lamentation over the industry’s disdain for hypertext, and Dream Machines was Xanadu’s manifesto. Nelson designed and printed the book himself. Its pages mostly look like this: Self-referential, multimedia, creative, and fun—they were a blueprint for the internet he was building. In the Dream Machines half, Nelson writes, “The real dream is for ‘everything’ to be in the hypertext. Everything you read, you read from the screen (and can always get back to right away; everything you write, you write at the screen (and can cross-link to whatever you read).” In one section Nelson asks himself, “Can It Be Done?” His answer: “I dunno.” Remember, Xanadu wouldn’t only involve links between works—it required hyperlinks, which as Nelson understood them, would need to contain the targets in themselves. (Eventually, Nelson would give these embeddings a new name—“transclusions”—and hyperlink came to simply mean “link between hypertext files.”) Every link would run both ways, each hypertext file would know exactly which other files were linked to it and how. This introduced a few problems, in the new interconnected ARPANET age: How do you keep track? Where’s the metadata stored? Can you afford enough space for it all?
Eric Hill, a 15-year-old hacker and indicted felon, who “had been dismissed by the judge with admiration.” In Swarthmore, Nelson hoped his decades-old dream of Xanadu would finally materialize. 5. Developing Xanadu Ted Nelson had built Project Xanadu into, for lack of better terminology, a cult.8 He writes: We all were deeply concerned about the Bad Guys, who we saw as a combination of IBM and the government. (The others were all Libertarians, I still called myself a Cynical Socialist.) The Bad Guys would spy on people, withhold and block information, and give us inferior hypertext. We had to Do It Right, to help prevent this. This meant using the standard business defenses—especially non-disclosure agreements (I made all of them sign) and secret proprietary algorithms. The Xanadians had a messiah—Ted Nelson—a gospel—Computer Lib—a persecution complex, a fearful dystopia—“inferior hypertext”—a hopeful utopia—Xanadu—and utter secrecy. Just six dudes in a rented house near Philly, building the internet, hiding from the Feds, signing NDAs, and saving the world. Nelson spent a summer explaining the project to his team in its entirety. By the end, Gregory, Miller, and Greene were the only ones left. They told Nelson, “We’ll do it,” and moved to another suburb, where they finally began to work on an implementation of Xanadu. The three quickly figured out a new system that would allow users to reference and link to specific parts of a file—they called these links tumblers, and made them work with transfinite numbers. Suddenly, transclusions were really possible. But after only a few early successes, the team’s progress stalled completely. Greene and Miller were young and left for jobs elsewhere, and so Gregory was left working on Xanadu alone. Nelson, meanwhile, ran a magazine called Creative Computing for a while, then tried again to build his JOT word processor—this time for the Apple II—then spent a year in San Antonio pitching a watered-down version of Xanadu (rebranded as “Vortext”) to a tech company called Datapoint. Datapoint wasn’t buying, but kept Nelson on in some sort of fake, primitive email job anyway. Gregory kept working on Xanadu in Philadelphia, slowly running out of money. Ted Nelson held an “Ecstasy party” in San Antonio: “A number of us floated down the river on inner tubes. It was quite lovely.” In 1987, like he did every year, Roger Gregory went to The Hackers Conference in Saratoga to show off the latest unimpressive version of Xanadu. There, he met a man named John Walker—founder of the wildly successful Autodesk—and pitched the project to him. Incredibly, Walker was interested, and after tense negotiations with Nelson, agreed to fund Xanadu in earnest. Beginning in 1988, Autodesk poured millions of dollars into the project, and a programming team led by Gregory finally started to make real progress. Walker said of Xanadu: “In 1980, it was the shared goal of a small group of brilliant technologists. By 1989, it will be a product. And by 1995, it will begin to change the world.” Sweeping rhetoric—clear deadlines. The team came nowhere close to meeting them. Infighting broke out between two factions—while Gregory simply wanted to patch together his old C code, insisting his product “was within six months of shipping,” the whiz-kid Mark Miller came back from his new job at Xerox PARC, alongside a half-dozen of his closest friends, and insisted on a perfectionistic rewrite in a more flexible language, Smalltalk. The PARC faction began to drive Gregory up the wall. According to Nelson, it got to the point that he “was throwing things and acting crazy.” So Nelson called John Walker, the two “summoned Roger to meet [them] at John’s house at Muir Beach, and Walker told Roger he was no longer in charge.” Miller took over and began the rewrite in Smalltalk. Walker’s deadline came and went, and the team delivered nothing. Xanadu’s offices descended into chaos—Miller anointed two PARC programmers to be “co-architects,” and the three of them increasingly left the rest of the team out of the loop. For four years, Miller dawdled about, adding features, giving them clever names (files were “berts,” after Bertrand Russell, and so, for symmetry’s sake, royalty-generating transclusions became “ernies”), and never building them.9 Meanwhile, Ted Nelson was living on a houseboat, attending sex retreats and Keristan orgies, and giving talks in Singapore. He recorded a new soundtrack for his student film, the one from 1959. In 1992, Autodesk’s stock cratered, and they divested entirely from Xanadu. Miller lamented that his program was just six months from completion. Ted Nelson started a film studio to make a movie with Doug Engelbart, then left for Japan to get a PhD. Xanadu’s code was open-sourced in the late 90s. 6. The World Wide Web In March 1989, a British computer scientist named Tim Berners-Lee, working at CERN, wrote a proposal for a system unifying hypertext and the internet. It was ignored. In 1990, Berners-Lee resubmitted his proposal, it was accepted, and he began to work on the World Wide Web. The WWW had a number of advantages over Xanadu: It was much simpler—Ted Nelson wrote of it disparagingly: “Where were annotation and marginal notes? Where was version management? Where was rights management? Where were multi-ended links? Where were third-party links? Where were transclusions? This ‘World Wide Web’ was just a lame text format and a lot of connected directories.” As it turns out, it’s much easier to build a lame text format and a lot of connected directories!
xenodochium

xenodochium is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between August 30, 2024 and August 30, 2024. The archive places it in contexts such as "the origin of the xenodochium". It most often appears alongside 38 Onslow Gardens, A Memoir of the Right Hon. William Edward Hartpole Lecky By His Wife, Agobard.

Reference entry
xenodochium
Mention count
1
Issue count
1
First seen
August 30, 2024
Last seen
August 30, 2024
August 30, 2024 · Original source
Fascinating facts: The book is the literary equivalent of a Victorian cabinet of curiosities. The details of the persecution of witches and heretics are not exactly fun to contemplate, but the book also discusses, e.g., the extremely odd beliefs of the early theologians, the gruesomeness of Spanish art, the regulation of French prostitutes, the consequences of coffee coming to Europe, why sadists make the best surgeons, the origin of the xenodochium, the physical location of hell, and so much else. Look at the old-fashioned super comprehensive chapter headings and you’ll see what I mean.
xenotransplantation

xenotransplantation is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between June 28, 2024 and June 28, 2024. The archive places it in contexts such as "Scully is no fan of xenotransplantation, the process of transplanting animal organs into human bodies". It most often appears alongside 2023 special, ACX grant winners, African Gray Parrot.

Reference entry
xenotransplantation
Mention count
1
Issue count
1
First seen
June 28, 2024
Last seen
June 28, 2024
June 28, 2024 · Original source
For example, Scully is no fan of xenotransplantation, the process of transplanting animal organs into human bodies. He puts it firmly in the speculative, high-risk, and disturbing category of animal research. While Scully believes biotechnology can be a force for good, he thinks genetic engineering and the making of chimeras tilts us into the realm of playing God. He heeds the words of Pope John Paul II: “Resist the temptation of productivity and profit that work to the detriment of respect for nature.”
Xi

Xi is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between December 30, 2021 and December 30, 2021. The archive places it in contexts such as "WHO said it skipped... Xi to avoid causing offense generally". It most often appears alongside ACX Grants, Aella, AI Alignment.

Reference entry
Xi
Mention count
1
Issue count
1
First seen
December 30, 2021
Last seen
December 30, 2021
December 30, 2021 · Original source
No direct inline source block was recovered for this mention.
Xi Gang

Xi Gang is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between April 06, 2022 and April 06, 2022. The archive places it in contexts such as "sometimes called the Xi Gang". It most often appears alongside America, American consulate, Attorney General.

Reference entry
Xi Gang
Mention count
1
Issue count
1
First seen
April 06, 2022
Last seen
April 06, 2022
April 06, 2022 · Original source
One thing that confuses me about this explanation is that Xi quickly pivoted from the champion of the Shanghai Gang to having his own faction, sometimes called the Xi Gang or the Tsinghua Gang.
Maybe the current “Xi Gang” and the old “Shanghai Gang” are the same people by a different name? But then how do we explain headlines like “Shanghai Gang” Seeks Xi’s Ouster? Maybe the term “Shanghai Gang” is now used for the remnants of the old Shanghai Gang who refused to switch allegiance to Xi?
Xicanx

Xicanx is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between May 24, 2022 and May 24, 2022. The archive places it in contexts such as "He self-identifies as Xicanx, which I think is what happens if you see 'Latinx' and think it’s a good start but needs more X’s". It most often appears alongside #Abolitionist, #AntiNazi, #antiwar.

Reference entry
Xicanx
Mention count
1
Issue count
1
First seen
May 24, 2022
Last seen
May 24, 2022
May 24, 2022 · Original source
He self-identifies as Xicanx, which I think is what happens if you see “Latinx” and think it’s a good start but needs more X’s. He writes plays about the Xicanx experience, and also goes by the Aztec name “Mixcoatl Itztlacuiloh”.
Xinjiang genocide

Xinjiang genocide is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between June 09, 2021 and June 09, 2021. The archive places it in contexts such as "The scale of the Xinjiang genocide dwarfs the scale of the latest mass shooting". It most often appears alongside Adamo, animal welfare advocates, Brian Tomasik.

Reference entry
Xinjiang genocide
Mention count
1
Issue count
1
First seen
June 09, 2021
Last seen
June 09, 2021
June 09, 2021 · Original source
On the other hand, there are 25 million insects per hectare, which means ten trillion insects = 400,000 hectares = about the size of Rhode Island. I'm not sure what to do with this information. It's tempting to say something like "crop farming kills more insects than insect farming, because it occupies way more than 400,000 acres and involves lots of pesticide". But Brian Tomasik, who analyzes this issue heroically thoroughly, says that if you're trying to prevent insect suffering, crop farming is probably net positive, because cropland has fewer insects than wild land, and most insects that exist suffer most of the time, with pesticide-related suffering being swiftly over and not very relevant. It's also tempting to say something like "if the scale of wild insect suffering dwarfs the scale of factory-farmed insect suffering so much, who cares?", but this doesn't really seem right. The scale of the Xinjiang genocide dwarfs the scale of the latest mass shooting, but we are still against the latest mass shooting, and all else equal we would prefer it not happen.
xrisk

xrisk is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between July 25, 2022 and July 25, 2022. The archive places it in contexts such as "grants relating to long-termism (eg AI, xrisk, forecasting, etc)". It most often appears alongside ACX, Adept, AI.

Reference entry
xrisk
Mention count
1
Issue count
1
First seen
July 25, 2022
Last seen
July 25, 2022
July 25, 2022 · Original source
4: More EA jobs: Open Philanthropy Project wants a Grants Associate to help process and organize grants relating to long-termism (eg AI, xrisk, forecasting, etc). See more EA jobs related resources here.
Xuanji Tu

Xuanji Tu is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between February 05, 2026 and February 05, 2026. The archive places it in contexts such as "The Xuanji Tu (璇璣圖) - the "Star Gauge" or "Map of the Armillary Sphere" - it's a 29 by 29 grid". It most often appears alongside 4o, 60 Minutes, @MattZeitlin.

Reference entry
Xuanji Tu
Mention count
1
Issue count
1
First seen
February 05, 2026
Last seen
February 05, 2026
February 05, 2026 · Original source
10: @RnaudBertrand: “The Xuanji Tu (璇璣圖) - the "Star Gauge" or "Map of the Armillary Sphere" - it's a 29 by 29 grid of 841 characters that can produce over 4,000 different poems. Read it forward. Read it backward. Read it horizontally, vertically, diagonally. Read it spiraling outward from the center. Read it in circles around the outer edge. Each path through the grid produces a different poem - all of them coherent, all of them beautiful, all of them rhyming, all of them expressing variations on the same themes of longing, betrayal, regret, and undying love.” Curious how hard this is to do in Chinese, and whether it’s actually a brilliant work of constrained writing vs. any set of Chinese characters put together and read loosely enough will have an interesting meaning.
XVII

XVII is a recurring concept in the Astral Codex Ten archive, appearing 1 times across 1 issues between October 30, 2025 and October 30, 2025. The archive places it in contexts such as "XVII is an anagram of vixi, Latin for 'I have lived'". It most often appears alongside 767 AD, @Scientific_Bird, ACX.

Reference entry
XVII
Mention count
1
Issue count
1
First seen
October 30, 2025
Last seen
October 30, 2025
October 30, 2025 · Original source
20: Did you know: in Italy, the unlucky number is 17 instead of 13, because XVII is an anagram of vixi, Latin for “I have lived” (note past tense).