羅賓·鄧巴
提出社會腦假說
Laughter is a mechanism to bond large groups.
笑是一種連接大群體的機制。
The human brain is a social brain, and it evolved to deal with social relationships.
人類大腦是社交大腦，它的進化是為了處理社會關系。
We are the product of our evolutionary past.
我們是進化歷史的產(chǎn)物。
Language evolved to allow us to gossip.
語言的進化是為了讓我們能夠閑聊。
The magic number 150 suggests that the size of our social networks is limited by the size of our brains.
神奇數(shù)字150表明，我們社交網(wǎng)絡的規(guī)模受限于大腦的容量。