On: Scientists built their own Stone Age tools to figu...

[marcellus23]

> We would have been just as specialized back then as we are now.

Can you please cite some evidence for this? My understanding is that specialization into trades was an outcome of the agricultural revolution, which happened quite a bit later than 30,000 BC.

[taway_6PplYu5 → marcellus23]

I've read that many ant species have more "roles" than a typical British village prior to the industrial revolution.

Note that this is in agreement with you, that the number of trades open for people to work in was pretty small until fairly recently.