We laugh far more often in social settings than when we are alone

It’s a vocalization, a sound, and it serves the purpose of active communication

When we laugh at our own actions, it’s a signal to our playmates that our intentions are ultimately playful

In other species, laughter occurs even in other species

The danger of laughter is the fact that we don’t all share the same norms to the same degree

What’s sacred to one person can be an object of mere play to another.

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