@KirkegaardEmil @thealthype https://notpoliticallycorrect.me/2017/10/28/microcephaly-and-normal-iq/ … https://notpoliticallycorrect.me/2017/10/24/small-brained-normal-iq/ …pic.twitter.com/6Z24diCJGM
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Long legs help for running. However the brain has huge metabolic costs. If we could get by with the number of neurons that erectus had,
Then why not? Also large muscles aren't conducive to strength. Sure Mark Rippetoe says 'a bigger muscle is a stronger muscle'
Though powerlifters vs bodybuilders is a good example there. Your examples are nothing like the huge metabolic costs large brains have
Increasing the size of any organ has costs. Nothing unique to the brain about that. The argument applies equally well to all the other cases
Big muscles, heart, long legs, big hands etc do not bring with it obstetric difficulties like large brain does
Erectus had an estimated neuron count of 62 bn neurons. http://m.pnas.org/content/109/45/18571.full … If we could have a brain his size and eat less to power it
Then, of course, our brains would have stayed that size. 86 bn neurons needs about 520 kcal to sustain the brain
It'd be considerably less if we had erectus brains, and as seen, it's perfectly possible to have normal IQs with erectus brains
How dumb, people with huge chunks of their muscles and legs gone don't function in the normal range with them naturally.
Uncharitable reading. Try again. https://en.wikipedia.org/wiki/Principle_of_charity …
Do you understand the scientific and logical importance of necessary and sufficient?
On muscles, the size doesn't determine strength. Look powerlifters vs bodybuilders.
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