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 @danlistensto and
ascribin' a lot more heritability to tallness/IQ than warranted, i think; recessives and sporting happen after all
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Replying to @palecur @danlistensto and
I'm ascribing it a fairly standard "nearly two thirds and the last third is mostly damage with little buffing"
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parents find it surprisingly hard to not abuse or neglect their children. :/
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Replying to @AmbrosialArts @djinnius and
is this actually true? do we have data? (very far from my experience)
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i think there’s lots of sorting going on in both directions so your experience and mine do vary but that doesn’t necessarily indicate what the absolute prevalence is (beyond like...establishing some pretty loose bounds on it)
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