You're trying to make a triple bank-shot of invalid (or at best very weak) inferences: 1. No-one cares about brain volume in itself 2. You're claiming brain volume is correlated with IQ
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Replying to @RCownie @TeaGeeGeePea and
There's plenty of evidence re brain volume being causally correlated with IQ. You not knowing it is not a kind of evidence.
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Replying to @gcochran99 @RCownie and
Imagine a pop in which 60% of early deaths ( one that prevent or greatly reduce reproduction) are caused by factors that nobody understands and so can't influence, while in another pop, that number is only 40%.
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Replying to @gcochran99 @RCownie and
Do you think that intelligence would benefit fitness equally in both those populations?
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Replying to @gcochran99 @TeaGeeGeePea and
*If* "intelligence", whatever that means, helps reproductive fitness and is independent of disease risk, then it's equally useful to the surviving adults in both cases. If "intelligence" - changing genes are associated with disease-related genes.
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Replying to @RCownie @gcochran99 and
Wonderful - you've made a fully generalized counter argument against any animals having a different level of intelligence than humans Does intelligence help lions survive and reproduce? Of course Does it help wolves? Yep Apply the same reasoning you've applied to human groups
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Replying to @CovfefeAnon @gcochran99 and
No. I think the view of "intelligence" as a one-dimensional trait like weight is nonsensical. And I think that having the cognitive capabilities for language and for learning and conforming to the knowledge and rules of a culture is really important.
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Replying to @RCownie @CovfefeAnon and
But outside and beyond that, it's not clear that it gives a selective advantage (in the subsistence farming/ pastoralist cultures of the vast majority of our ancestors).
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Replying to @RCownie @gcochran99 and
You're not asserting that "it's not clear" you're asserting that these pressures that you don't understand at all *were exactly the same for all groups* because you understand selective pressure for intelligence - "more is always better"
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Covfefe Anon Retweeted RichC: nowhere else to go, my head is on th ground
Covfefe Anon added,
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Replying to @CovfefeAnon @gcochran99 and
Which is consistent with my belief that selective pressure for many aspects of "intelligence" in low- productivity-agriculture/pastoralism societies has been very weak or non-existent. "Equally useful" includes "zero usefulness for marginal increase in both cases".
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Replying to @RCownie @CovfefeAnon and
You seem to be assuming a value of zero because it's convenient for you not to have to think about, not because you have evidence that is the case.
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End of conversation
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