In fact, the enormous size of the human brain is mysterious. The article has suggested that the social networking could be the factor. They had to study other animals rather than primates in order to help to shed the light. The researchers have discovered that the primates with a big frontal cortex tend to live in large groups. The predators and other factors could have helped primates to move ahead. I think that hypothesis is interesting.
For further reading, click on the link below.
Sociable, and Smart