Astral Codex Ten

Marcel

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Marcel

Article

Marcel is a recurring person in the Astral Codex Ten archive, appearing 5 times across 5 issues between April 10, 2022 and April 01, 2026. The archive places it in contexts such as “Contact Marcel if you want to subscribe to the mailing list for the LW/ACX Cologne meetup group”; “project leader Marcel pursued it anyway, with his own money”; “Contact: Marcel”. It most often appears alongside Daniel, India, Scott.

Metadata

  • Category: People
  • Mention count: 5
  • Issue count: 5
  • First seen: April 10, 2022
  • Last seen: April 01, 2026

Appears In

Source Context

Recovered passages from the original issue text. When the raw archive preserved outbound links inside the source passage, they are listed directly under the quote.

Spring Meetups In Seventy Cities
April 10, 2022 · Original source
COLOGNE (KÖLN) Contact: Marcel Müller (marcel_mueller@mail.de) Date: April 23 Time: 5:00 PM Coordinates: https://plus.codes/9F28WRMX+97 Location: Marienweg 43, 50858 Köln (Cologne) Notes: Since Covid rates are still very high in Germany attendees must be fully vaccinated and tested on the same day. Self tests are accepted and available at the meetup location, so there is no need for people to go out of their way to get tested beforehand. Also, weather permitting, the meetup will mostly be outside on our patio. Group info: Contact Marcel if you want to subscribe to the mailing list for the LW/ACX Cologne meetup group
Inline links: https://plus.codes/9F28WRMX+97
Impact Market Mini-Grants Results
October 09, 2023 · Original source
On the other hand, nobody invested in the Base Rate Times, a newspaper-styled prediction market dashboard. But project leader Marcel pursued it anyway, with his own money, and we ended up valuing it at $6,000 - if it had been in our market, it would have been the second-most-successful project out of 18. No mystery why people didn’t invest in it - Marcel valued it at $20,000, nobody else thought it was worth that much, and if they had invested they would have (at our $6,000 valuation) lost money. If this had been a normal grants round, Marcel could have asked for a grant, received only however much it cost to make it (up to $6,000), and had it gone well. It still sort of went well, since Marcel made it anyway, but I feel like this is another mark against our methods.
Meetups Everywhere 2025: Times and Places
August 29, 2025 · Original source
Contact: Marcel Contact Info: marcel_mueller[a t]mail[period]de Time: Saturday, September 13th, 5:00 PM Location: Marienweg 43, 50858 Köln Coordinates: https://plus.codes/9F28WRMX+97 Group Link: https://www.lesswrong.com/groups/2QwpKyXvwiZ53G4HP Notes: If you read this you are welcome.
Inline links: https://plus.codes/9F28WRMX+97
Highlights From The Comments On Fatima
October 24, 2025 · Original source
Generalized one-fell-swoop paranormal explanations. Demons are trying to confuse us, or the simulation is glitching, or there’s some kind of Harry Potter-esque masquerade overflowing with wizards and monsters that carefully hides itself from us Muggles but occasionally leaks. UFOs do not really lend themselves to an individualized paranormal explanation - too many weird aliens in saucers trying to send whichever message of peace and love is most politically popular at the time of the abduction, too few Matrioshka brains with nanotech - so bringing them into our attention may make us more interested in looking for a generalized paranormal explanation which is merely pretending to be all these specific supernatural beings, including the Virgin. I take this one sort of seriously, but I also think it violates a general heuristic against conspiracies and false flag attacks. If some incredibly powerful being is telling you that it’s the Virgin Mary, and discussing Catholic doctrine, and performing healing miracles, I think you should at least start with a presumption of taking it seriously. But at this level of distance from any well-established priors, who even knows? GedAtThwll writes: This account reminds me of the semi-famous Ariel School UFO encounter [in Zimbabwe], covered well on YouTube and Wikipedia. Basically, ~60 kids saw a “silver craft” descend, and aliens (of debatable description) came out and did various things (described differently by participants). Oddly similar to the silver sun -> hallucinations. I don’t know how much it reminds me of Fatima, but I agree “sixty people all say they saw a UFO and some aliens” is the sort of mass hallucination I claimed basically doesn’t happen. I was going to attribute this something about the psychic makeup of poor uneducated Zimbabwean children, but according to Wikipedia, “Ariel School was an expensive private school [and] most of the pupils were from wealthy white families in Harare.” One interesting feature of this story is that it happened a few days after a previous UFO panic in Zimbabwe - thousands of people said they saw some kind of fiery spaceship in the sky. This was very likely true - their accounts match a Russian rocket that reentered and burned up in the atmosphere around that time. So it seems like maybe the rocket primed people into a UFO mania, and that caused . . . sixty schoolkids to all hallucinate the same thing? At least to the point where some later investigators who are accused of maybe asking some leading questions could get them to give similar answers? Peter McLaughlin (blog) writes: This is excellent. One additional strand that I’d like to see someone tug on – maybe I will. The Irish nationalist poet W. B. Yeats has a poem about the 1891 funeral of Irish nationalist political leader Charles Stewart Parnell. The poem describes how clouds covered the sky on the day of the funeral, the sun could be seen through a gap in the clouds, and then a star “shoots down”. Most people who write about this poem take this to be pure symbolism (the next stanza describes a scene of pagan sacrifice that definitely is pure symbolism), but a while ago I came across an essay where Yeats insists that no, this actually happened. He wasn’t at the funeral himself, but he knew lots of people who were. He cites his unrequited love Maud Gonne telling him afterwards about “the star that fell broad daylight as Parnell’s body was lowered into the grave”, and quotes the writer Standish O’Grady: ‘I state a fact - it was witnessed by thousands. While his followers were committing Charles Parnell’s remains to the earth, the sky was bright with strange lights and flames. Only a coincidence possibly, and yet persons not superstitious have maintained that there is some mysterious sympathy between the human soul and the elements, and that storm, and other elemental disturbances have too often succeeded or accompanied great battles to be regarded as only fortuitous...’ Now, Yeats was exceptionally credulous and prone to exaggeration. And he wrote the poem years after the funeral: while I think it’s very unlikely, it’s not impossible that he was ‘contaminated’ by subsequent knowledge of the reports from Fatima, and this coloured the way he stitched together the testimony he’d heard. The two sources he cites are less obviously Fatima-esque than his poem (though they don’t contradict each other, and altogether they add up to something exceptionally Fatima-esque with the lights and the falling object etc.; and, again, my knowledge of Yeats’ biography makes contamination seem unlikely). Even accounting for all this, the similarities between Yeats’ poem and the Fatima sun miracle are really striking to me. I think this is a potentially very important datapoint, because it’s an almost entirely non-religious example. To be sure, you can define ‘religion’ so that Irish nationalism can be a religion, but it’s very different from a bunch of people huddling on a hill because someone told them the Virgin Mary might appear. And indeed Parnell was in the unique position of being the Protestant leader of a mostly-Catholic political movement, cutting across Ireland’s religious divide. If there really was a Fatima-esque sun miracle at Parnell’s funeral, it strongly suggests that the correct explanation is (a) non-religious/materialist but also (b) ‘objective’ (or at least as intersubjective as optical illusions) rather than a matter of pure mass hysteria or hallucination. Which is exactly what this post suggests. And Parnell’s funeral came several decades before Fatima, so genuine primary sources would rule out ‘social contagion’ completely. This has been kicking around in the back of my mind for a while, but if enough people are interested I may try to track down the sources. The main published collection of Yeats’ letters to and from Gonne starts in 1893, two years after the funeral, so the main source he cites might be tricky to verify. But there might be independent diaries or newspaper reports from people at the funeral who weren’t in Yeats’ social circle, and at very least I can check the quote from Standish O’Grady. Melias (blog) writes: This is my perspective as an Orthodox Christian, and a possible framework for interpreting Fatima as a real miracle without becoming a fire-and-brimstone Catholic. It’s possible that Fatima et al. are partially or entirely from God. It’s also possible they are partially or entirely demonic phenomena, though often repurposed by God to good ends. Either way, if I have good reason to believe the Catholic Church is not fully in accord with Divine Truth, these miracles on their own shouldn’t make me change my mind. Christ Himself tells us to believe for His own sake, not for the sake of miracles. I believe in the supernatural because of numerous miracle stories that are impossible to explain otherwise. But my non-materialism is specifically Orthodox Christian because I can’t explain Jesus unless He’s the Christ, and I find Him most clearly in the practice and teachings of the Orthodox Church. Orthodoxy has plenty of miracles too, but that’s not why I’m here. I.E. Christ Himself gives you permission to decouple the reality of a supernatural occurrence from an associated claim to Divine Truth. You can use Fatima to update the chance of P(supernatural) without an equal update to P(Catholicism). Anyway, if you do want to keep going down the miracle rabbit-hole, the Orthodox equivalent of Fatima is the annual miracle of the Holy Fire. The main miracle - that a candle is miraculously lit while the Patriarch of Jerusalem is alone in the Holy Sepulchre - has supposedly been debunked since the Middle Ages. Even many Orthodox doubt it. But pilgrims regularly report a secondary miracle: For the first few minutes, candles lit from the Holy Fire don’t burn things, at least not how they should. Some videos [Video 1 here] Looks like this guy should have severe burns [Video 2 here] My brain tells me this might be possible with regular candles... but her sleeve gets plenty of time under intense flame [Video 3 here] They don’t leave their flesh in the flame for too long, but my brain tells me that putting the bundle of candles directly under your chin like the man does at 0:07 should also result in serious burns I pray before a single small candle every night. If I put my hand two inches above the visible flame, I can only hold it for ~2 seconds until it hurts too much. I find the videos and first-hand testimony (see Rod Dreher’s blog for one example) pretty convincing. Deiseach writes: Ah, I’m not pushed about Marian apparitions. The miracle of the sun is along the lines of the Shroud of Turin - you don’t have to believe the shroud is really the shroud of Jesus Christ, nobody is making you, it’s not doctrine. At the same time, if you want to venerate it (as you would a crucifix) that’s okay. Keep away from making extravagant claims, don’t contradict received doctrine, and it’s fine. Did a miracle happen at Fatima? I have no idea. I believe in God and the supernatural and all that jazz, but I’m not living and dying on “did this one event at this one apparition site really happen? if you prove it didn’t, oh no my faith is destroyed!” During the moving statue craze in Ireland, we had our own little local apparition. At the height of it, tour buses used to come with people to pray at the site. That has long died down, and I don’t recall that there were any earth-shattering revelations claimed by the visionaries, what remains is a quiet revival in people going to pray the rosary at the grotto. https://en.wikipedia.org/wiki/Moving_statues There are a *lot* of alleged apparitions and private revelations that are never officially accepted by the Church, and a lot more which are condemned as fakes and frauds. Ross Douthat writes (on Twitter): Re-read Scott Alexander’s Fatima post (why not?) and I think this is where his analysis goes astray - after realizing there were a bunch of “echo” miracles like the initial case, not all church-approved, he decides that *strengthens* a skeptic’s case. But you don’t have to postulate demons to see why a big miracle might have non-church-approved sequelae. 1) Catholicism could be fallible in discerning which miracles are legit. 2) Even seers have free will; visions could fall on fallible ppl who run wild with dubious claims and 3) you’d expect a big miracle to have some sequels where enthusiasm does get the better of people (which any theory of miracles obviously has to allow for). Clearly (if He exists) God doesn’t force ppl to correctly interpret every experience He grants them, and so a multiplicity of miracle sequels, some of which seem credible and even produce video evidence, and some of which veer off into left field, seems entirely compatible with the original one actually being a divine intervention - if that’s where the core evidence points. I answered: Thanks for engaging in depth. I admit that was a surprising direction for that result to go, but I mostly stand by it. I think first, that the extra miracles demonstrate it has to be a subjective phenomenon. Partly because it was unclear at Fatima whether there were any people who didn’t see it (the two negative testimonies were such a small number compared to the many positive ones that it was tempting to dismiss them as lying, or confused, or looking the wrong direction) - but at several of the other miracles it’s much clearer that large fractions, sometimes a majority, saw nothing. Partly because in some cases (Benin City, Lagos) a stadium full of people saw it, but people in the same city, just outside the stadium, reported nothing unusual. And partly because the miracle can’t be caught on video (the one video that I thought was okay, the Filipino one, got picked apart in the comments). It being a subjective phenomenon doesn’t prove it’s not a miracle (it could be a sort of prophetic vision), but it at least opens the door to that possibility. And second, although I don’t claim to be able to know for certain what God will or won’t do, I think at least the Necedah event meets any bar a reasonable person might set for “too dumb and heretical to be a real apparition”. If overly enthusiastic worshippers at a fake apparition can report sun miracles, that implies that the human capacity for hallucination is strong enough / specific enough to potentially produce spectacular sun miracles in some situations. But once we admit that, it’s only a trivial extension to say that this same human capacity to hallucinate sun miracles could have been responsible for the original sun miracle, which was more impressive than Necedah in degree but not in kind. Together, I think these are a significant negative update from where we would be if we only had the original miracle, where we might have assumed (like Dalleur) that it was an objective phenomenon that everyone could see, and that there was no way anyone could be “enthusiastic” enough to hallucinate something so striking. Valerio writes: I am Italian from the south of Italy. I was talking to my mom about your analysis of the Fatima mystery (which is very famous here). My mom told me she had exactly the same experience when she was doing a “religious trekking” trip in a small city called Gallinaro (Frosinone). She was around 18 at the time (she is 70 now). She saw a pulsating sun, like it would get closer and closer and then the go back again. This effect repeated several times (3/4) and she got really scared. Importantly, at the time she didn’t know about this effect of the pulsating sun (she learnt about it later). Also importantly she claimed they were not staring particularly at the sun nor they were expecting any miracle. They were actually sitting down on a bench nearby a cliff eating a sandwich. She doesn’t remember whether if was cloudy or not but she says she was able to stare in the sun, so maybe it was. As she was coming down the trip, her group met a local lady that confirmed those types of visions would occur there. This place is famous cause a young little girl and her grandma had a vision in a cave ( little Jesus, no more details provided) few years back. When my mom visited the little girl was still alive, not sure about now. As I am writing this , she just told me the story so didn’t have the time to research it independently . Victoria F writes: I think you put too much stock in the Catholic Church excommunicating someone and how much that reduces the odds that Mary was involved or not. Pope St. Leo I and St. Joan of Arc have also been excommunicated. Many seers are given difficult treatment by the Catholic Church at first. Lot of people here say this is the the “best” miracle. I think the many spontaneous healings at Lourdes are perhaps better: https://www.basicincome.com/bp/files/A_Protestant_Looks_at_Lourdes.pdf though I’m not sure how to get the medical records myself https://www.lourdes-france.com/en/the-medical-bureau-of-the-sanctuary/ Our Lady of Zeitoun is also perhaps a better apparition. At least it has some cool photos. I admit excommunication of the seers/believers is not proof that some of the other miracles were fake, but the Necedah one, where Mary gave warnings about the Rothschilds, and the “seer” also talked to the ghosts of George Washington and Abraham Lincoln, seems pretty bad. An acquaintance claims to have done their own analysis of Lourdes and found that the impressiveness of the healings predictably decreased over time as record-keeping and medical verifiability got better, but I haven’t seen his work. There’s an interesting Substack post by a Zeitoun skeptic here. Marcel writes: Speculative hypothesis that might be worth exploring: could the perceptual mechanisms involved in the Fatima Sun Miracle be related to those underlying Tögal visions in the Dzogchen tradition of Tibetan Buddhism? In Tögal (an advanced, traditionally esoteric practice), meditators report experiences of multicolored, moving light displays in response to sky or light gazing. The parallels with the Fátima reports are striking: light as a trigger, dancing colors, and evolving visionary forms. If so, Tögal might provide a reproducible framework for studying how visual and neurological processes, shaped by expectation and attention, can generate experiences of radiance that are interpreted as miraculous or sacred. Another Buddhist explanation! I can’t find a Tögal source anywhere near as clear as Daniel Ingram’s work on fire kasina, but for what it’s worth, the symbol of Dzogchen Buddhism, the thigle, looks like this: …with some representations being even more suggestive: Nikita Sokolsky (blog) writes: » Our best source for witness testimonies is the Documentacao Critica de Fatima [...] The rest is available only as physical books, $15 + shipping each. Somebody should buy the books, scan them, machine translate the testimonies, and put the translations online. The most important is Volume III I’ve ordered Volume III - though shipping anywhere outside Portugal cost $48 (not surprising for a 639 page book, I guess). They promise delivery by Oct 12th. » There are a few articles about solar retinopathy in the context of Marian shrines that I couldn’t access, including at least Nix and Apple (1987) and Campo et al (1988) Emailed you both. Thank you, Nikita! I’ve uploaded Campo here, and Nix & Apple here. Campo is only a few paragraphs, and contains little of interest if you’ve read the original post. Nix & Apple profiles several cases in New Orleans, including a pilgrim who saw the miracle in Medjugorje and then went home and saw it again in New Orleans, and a second person who skipped Medjugorje and saw it in New Orleans with no previous exposure. There was also an interesting case of someone who stared at the sun for 15 minutes with no injury, then tried again for 15 seconds and did get an injury that time. My days of not understanding the function mapping sungazing length to injury probability are definitely coming to a middle. The eye doctors who wrote the article only say that “Evidence suggests a great individual variation in the susceptibility for developing solar retinopathy, as the cause of the lesion is felt to be a photochemical injury rather than a thermal injury of the retina and retinal pigment epithelium.” The Ghiaie translations are in a form that makes them harder to upload, but there are about a dozen which contain descriptions of a sun miracle, all of which match the Fatima testimonies closely. The one I found most interesting was a monk nearby, who originally doubted the apparitions; he was in his monastery doing normal work when he saw the sun miracle, which included a beautiful white cross appearing in the sky. Other monks saw it too. The next day, he says that a secular newspaper claimed local astronomers had found some kind of ice crystal phenomenon responsible for the event, but he didn’t believe it. He didn’t clarify exactly where this happened (though his address was Castelnuovo Don Bosco, about 80 miles from Ghiaie) or when (though the testimonial implies it was at the same time as the Ghiaie miracle). Main Conclusions And Updates I’m impressed by the fire kasina correspondence, but the difficulty in explaining how everyone immediately became an expert fire kasina meditator is almost as tough as explaining the original miracle.
Inline links: writes, on YouTube, Wikipedia, match a Russian rocket, blog, writes, blog, writes, Video 1 here, Video 2 here, Video 3 here, writes, https://en.wikipedia.org/wiki/Moving_statues, writes, writes, https://www.basicincome.com/bp/files/A_Protestant_Looks_at_Lourdes.pdf, https://www.lourdes-france.com/en/the-medical-bureau-of-the-sanctuary/, some cool photos, here, writes, https://substackcdn.com/image/fetch/$s_!tnHP!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fcaa90086-ed0b-4620-b0e5-502d1d34419d_800x800.png, https://substackcdn.com/image/fetch/$s_!EVex!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F2c466a55-ea5c-4698-a27c-4947720edcfa_736x368.jpeg, https://substackcdn.com/image/fetch/$s_!vVge!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F3052f661-b774-4dcb-9734-7c2e297c082a_225x225.jpeg, blog, Campo here, Nix & Apple here
Meetups Everywhere Spring 2026: Times & Places
April 01, 2026 · Original source
Contact: Marcel Contact Info: marcel_mueller[@]mail[.]de Time: Saturday, April 11th, 5:00 PM Location: Marienweg 43, 50858 Köln Coordinates: https://plus.codes/9F28WRMX+97 Group Link: https://www.lesswrong.com/events/JY2EZf22uJxqgA6Kz/lw-cologne-meetup-sv6h Notes: This is also the monthly Less Wrong Cologne social meetup. If you read this you are invited.
Inline links: https://plus.codes/9F28WRMX+97, https://www.lesswrong.com/events/JY2EZf22uJxqgA6Kz/lw-cologne-meetup-sv6h