These are sort of flailing away at different ideas but another way of doing--an older way is proposed by Plato, who viewed laughter as a form of bonding against a common enemy.

我现在说的都是各种猜想,但从另一个角度看，一个古老的角度,这是由柏拉图提出的，他认为笑是一种巩固感情的形式,对抗共同的敌人。

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