I don’t think the correlation between brain size and general intelligence is that strong. Maybe the hunter gatherer used a bigger part of his brain to quickly a

I don’t think the correlation between brain size and general intelligence is that strong. Maybe the hunter gatherer used a bigger part of his brain to quickly and accurately interpret impressions, to find the food and not become food himself. The domestic man might have been better at tasks like figuring out how much of his seeds he could eat and how much he must save to plant next spring, even with a slightly smaller brain.