As far as know, the size of human brain reduced during last several thousand years. That's probably because we constantly outsourcing our intelligence into books, road signs, snart applications and so on

Not just that; we have laid less emphasis on the utilization of our brains to store up large infos and to perform complex calculations. And these would have effect on our brain size.

Imagine now, we have calculators and computing devices, but at the expense of our own computational abilities. I guess we would also have to blame the dwindling of the brain size on computational aids.

Thanks for coming