Astral Codex Ten

Maize

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Maize

Article

Maize is a recurring concept in the Astral Codex Ten archive, appearing 2 times across 2 issues between December 19, 2021 and March 03, 2023. The archive places it in contexts such as “New-world maize and cocoa are among the biggest crops in Africa”; “Maize has survived nine millennia of rising and falling bloodthirsty Mexican empires”. It most often appears alongside 1700s Great Britain, Acropolis of Athens, Afghanistan.

Metadata

  • Category: Concepts
  • Mention count: 2
  • Issue count: 2
  • First seen: December 19, 2021
  • Last seen: March 03, 2023

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.

Open Thread 203
December 19, 2021 · Original source
3. Comment of the week is Coagulopath on what happens when organisms get dropped in alien environments. A brief excerpt: "Agricultural crops often do best far away from their native land, where pests and pathogens are adapted to them. New-world maize and cocoa are among the biggest crops in Africa. Conversely, most coffee is grown in South America. Sometimes being far from home is a good thing."
Inline links: what happens when organisms get dropped in alien environments
Against Ice Age Civilizations
March 03, 2023 · Original source
The top 80m of the Great Pyramid would rise above the waterline, forming a little island. The part of the Pyramid above the water would still be taller than the entire Leaning Tower of Pisa. It would be pretty hard to miss! So a 120m sea level rise wouldn’t be enough to wipe out evidence of our crop of ancient civilizations, and shouldn’t be enough to wipe out evidence of a previous crop, unless they had a very different geographic distribution than ours. Argument 2: Where Are The Crops And Livestock? We can do genetic analysis of crops and livestock, compare them to wild plants and animals, and make good guesses about where and when they were domesticated. Wheat was domesticated somewhere around Karaca Dag, Turkey, around 9000 BC. Barley was domesticated somewhere around Jarmo, Iraq, around 9000 BC. Cows were domesticated somewhere around Cayonu Tepesi, Iraq, in 8500 BC (then a second time, in Pakistan, later on). Rice was domesticated in two places in China around 10,000 BC. All of these crops were invented exactly where the standard historical narrative says there were late pre-agricultural people of exactly the type who would domesticate crops. They spread at about the same rate as sedentary living in general, monuments, and other signs of complex civilization. The only known exception is Gobekli Tepe, a megalithic site in Turkey, which may very slightly predate known agriculture. But it also might very slightly post-date known agriculture, or exactly-date known agriculture (it’s just sixty miles from Karaca Dag, and it would make sense if they were the people who domesticated wheat). That one anomaly aside, there’s a very tight agriculture <—> things that seem to require agriculture coupling. So if there were Ice Age civilizations, what did they eat? It couldn’t have been any of our known crops, which post-date them. Could it have been their own crops, which were later lost? Seems unlikely. Throughout most of history, civilizations have risen and fallen, but they don’t lose agriculture! The empire divided longs to unite, the empire united longs to divide, but the Chinese never fragmented so hard that they forget how to cultivate rice and rice went extinct. Maize has survived nine millennia of rising and falling bloodthirsty Mexican empires. Almost everyone in the Amazon died in the 1500s when European diseases swept through, but they still left us manioc, squash, and chiles. Could Ice Age civilizations have thrived without domesticating any plants? We increasingly realize that agriculture isn’t all-or-nothing, there’s a spectrum from picking wild plants when you come across them to domestication, irrigation, and the full suite of agricultural technologies. It wouldn’t surprise me if some combination of early-non-domestication-involving agriculture and hunting-gathering off of very rich lands could create enough sophistication to build a Stonehenge or a Gobekli Tepe. But you’re not getting Egypt or Great Britain off of that, sorry. Argument 3: Lead Levels Thanks to commenter WTFwhatthehell for bringing this one up. Many ancient civilizations mined lead. Some of the lead made it into the atmosphere and settled down again in other places. You can measure the amount of lead in different places to see how much lead humans are mining. This isn’t perfect - the resolution is closer to continental than global - but you can check lots of different continents and get an okay reading. This paper finds lead levels started rising 1000 BC, which it links to the Phoenician expansion happening around that time. In theory, this could suggest that no ancient civilization reached a tech level where it started mining lead, ie the tech level the Phoenicians had in 1000 BC. This is in theory only, because I can’t find a clear record of anyone checking. I assume ice core scientists would have noticed if it happened, but there’s no publicly available dataset with lead levels 10,000 years before present, nor is there a paper titled “We Checked To See If There Were Anthropogenic Lead Emissions In 10,000 BC And There Definitely Weren’t”. Here is a paper that looks at lead level in human bones. They don’t do a great job explaining how lead makes it into human bones, but it seems like a mix of the kind of lead pollution that makes it to Greenland ice cores, plus personally wearing or consuming things that have touched lead. This study investigates skeletons from 12,000 BC onwards, and finds that lead levels start rising in 5,000 BC, when people developed “cupellation”, a technique for using lead to purify gold and silver (it then goes up much further between 1000 - 500 BC, probably the same spike the Greenland cores found). So this presents some very weak evidence against significantly elevated lead from 12,000 BC onward. But it doesn’t rule out small amounts of lead mining far away from the bones’ previous owners, and doesn’t rule out a civilization lasting from 15,000 - 13,000 BC. A Great Britain-level civilization would be expected to raise lead levels a lot, and this pretty strongly rules it out. I would expect an Egypt-level civilization to at least invent cupellation, but I don’t know if its lead would necessarily make it to wherever these bones came from. A Stonehenge or Gobekli Tepe level civilization isn’t ruled out at all. Conclusion I think there’s pretty strong evidence against lost Egypt- or Great Britain- level Ice Age civilizations. I don’t want to rule out a lost Stonehenge or Gobekli Tepe level civilization, but there’s not much positive evidence, and there’s some negative evidence. Stonehenge was built by Neolithic farmer-pastoralists, who had lots of domesticated crops and animals. Gobekli Tepe was built right next to the area where wheat was domesticated at around the same time. Existing early monuments mostly suggest a story where sedentary city- and temple- building civilizations either require domesticated agriculture, or invent it very quickly. None of this means Ice Age people didn’t have fascinating cultures of their own which were advanced in other ways - interesting laws, taboos, mythologies, customs, oral traditions. Tyler Cowen says that everything started earlier than you think, and this is what we’ve been finding about various forms of human culture too (cf. Against The Grain, The Dawn Of Everything). I just don’t expect lost Ice Age cities or giant monuments. I think Michael Shermer’s attempt to argue the same case is weak, relies on a still-controversial rejection of the Younger Dryas Impact Hypothesis, and generally leans too much on the absurdity heuristic without moving the needle one way or the other. All of the following predictions are about structures on Earth built by homo sapiens without time travel: 20% chance we ever find something demonstrating equal or greater architectural advancement to Gobekli Tepe, dating from before 11,000 BC.
Inline links: Karaca Dag, Jarmo, Iraq, Cayonu Tepesi, Iraq, in two places in China, WTFwhatthehell, This paper finds lead levels started rising 1000 BC, https://substackcdn.com/image/fetch/$s_!rPgI!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F6265c4a7-a563-477c-afbc-7b3c9b8dd73e_1280x1247.jpeg, Here is a paper, https://substackcdn.com/image/fetch/$s_!SS8H!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0b5de41a-38d8-4145-821d-5e2f6d2de228_534x215.png, Against The Grain, The Dawn Of Everything, Michael Shermer’s attempt to argue the same case, Younger Dryas Impact Hypothesis