Say we had a rule: you must be "this tall" to go to the city. City would get tall, country short, no? Now: city has one kid and country has three. We've only been doing it for three generations. Breeders equation can tell you the rest.
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Replying to @djinnius @danlistensto and
There are free parameters. The direction of the constraints couldn't be clearer from the data.
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Replying to @djinnius @notsonyaforwork and
I don't think it's as simple as "city would get tall, country would get short". Yes, city would get tall. No, country wouldn't necessarily get short. It's not nearly as closed a system as the city, and it's supply of tallness is not so finite.
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Replying to @danlistensto @notsonyaforwork and
oh you get paid more in the city, are awarded higher social standing, and have more sex partners. tall people tend to choose the city. even if they have short parents. maybe especially if.
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Replying to @djinnius @notsonyaforwork and
granted. I find the argument that city gets influx of tall immigrants, and net increase in local tallness over time, to be coherent. It's the other half I'm questioning. Country does not necessarily get "drained".
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Replying to @danlistensto @notsonyaforwork and
genes is as genes does you can't have one without the other
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Replying to @djinnius @notsonyaforwork and
why? as mentioned previously, the country is not nearly as closed of a system as the country.
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Replying to @danlistensto @notsonyaforwork and
if you're proposing a link like city dwellers retiring to the country and having more kids, it doesn't appear to be happening. yet. massively polygenic systems behave like a powder, kinda. The universities are enriching the g factor. The more efficient they are →
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Replying to @djinnius @notsonyaforwork and
> if you're proposing a link like city dwellers retiring to the country and having more kids, no, i'm not. i'm saying that the very large population size of the country (hundreds of millions+, full order of magnitude larger than city) makes this kind of calculus useless.
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what mechanism suggests we should consider IQ to be a highly conserved quantity in large populations? what mechanism suggests that new high IQ individuals are not emerging from large populations at a faster rate than the city shreds them?
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Replying to @danlistensto @notsonyaforwork and
answering either of those questions would be repeating myself.
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