I like this quote: A few years later, the anthropologist Richard Wrangham built on this idea, arguing that the invention of cooking was crucial to human brain

I like this quote: A few years later, the anthropologist Richard Wrangham built on this idea, arguing that the invention of cooking was crucial to human brain evolution. Soft, cooked foods are much easier to digest than tough raw ones, yielding more calories for less gastrointestinal work. So along that line, the massive recent increase in high-sugar food/drinks and fast-food restaurants like McDonald's should be fueling another leap in brain size!