>>5584076I thought a lot about this when visiting Thailand last week. Every single Thai person has a tiny head. The entire back section of the skull that white people have is missing. This is because Thai people evolved in a warm climate. If someone in Thailand is born with a large skull/brain, then thinking too hard will cause their brain to overheat, and they're more likely to die than someone with a smaller head. Multiply this by billions of people over hundreds of generations and you wind up with people who universally have a smaller head and aren't as intelligent. In contrast, the cold weather enabled us to overclock our brains, think harder, and become smarter without overheating
