[wins32767]

> And those primitive humans had the same capabilities we do today.

Evolution has been ongoing on humans the whole time we've been a species. Drinking milk in adults has only been a capability we've had for ~6000 years. I'd be hard pressed to claim that there haven't been other capabilities that have evolved over that time that led to our ability to have more social organization.

[seadan83]

Lactose tolerance AFAIK is a single enzyme. That taking 6000 years to develop I think is evidence against what you are saying. Specifically, that is a tiny adaptation compared to the organization of the human brain. Is 30x more time than lactose tolerance enough for significant brain changes? I find it implausible, I would guess the major adaptations of the brain are on the order of millions of years, not a couple hundred thousand.

The adaptations for social organization seemingly have been with us for a long time. AFAIK humans have been in large groups for a very long time, as long as they have been homo sapiens (Large being over 50 members, and take that with a grain of salt, that is only my possibly incorrect understanding).

I do find it very plausible that people 1k, 10k, 50k and maybe even 200k years ago were all smart (Plato probably is far smarter than most alive today). Though, smart and education are different, while smart- the body of knowledge was limited.

[masklinn]

> Lactose tolerance AFAIK is a single enzyme. That taking 6000 years to develop I think is evidence against what you are saying.

Also relevant: lactose tolerance is something we start out with, babies need it. So lactose tolerance, or more properly lactase persistence, was not the development of a brand new trait out of nowhere, it was maintaining a capability past the age where it would previously degrade out of functionality.