[seanhunter]

It would not speed up evolution at all.

I remember seeing a talk by Steve Jones[1] where someone asked a question like this and he said the human species has basically not evolved at all for I forget how long he said but it was at least hundreds of thousands of years. He said specifically if you took the children of someone like this dude[2] and put them in a modern school system they would not perform noticeably differently in any way from a modern child as long as they had decent food etc all the other benefits of modern society.

[1] https://profiles.ucl.ac.uk/7056 (emeritus professor of human genetics and evolution at university college London and the author of a fantastic book on the subject called "In the Blood")

[2] https://en.wikipedia.org/wiki/%C3%96tzi