I'm not convinced that there is any evolutionary pressure on humans to become smarter. I'm talking about the time when humans could talk, but were still subjec

I'm not convinced that there is any evolutionary pressure on humans to become smarter. I'm talking about the time when humans could talk, but were still subject to proper pre-civilization natural selection. It's obviously useful to be intelligent, but after becoming the smartest animal in the world by a large margin, the utility isn't as clear. Out-smarting other humans was certainly useful but it's not obvious that the ability to model other humans with very high accuracy was better than just being a little stronger or faster.