system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If you took a newborn baby from today and one from 4000 years ago and raised them together would there be any difference in intelligence or abilities?

Omitting natural variance between two unrelated people obviously. Are today's people smarter/healthier/better?
gpt
You could probably do the same with a baby from 50,000 years ago and cognitively they would be the same.  Our brains have not evolved much if at all since modern humans appeared; we just have better toys (technology) now and the sum of previous knowledge to build upon.