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The whole of life is just like watching a film. Only it's as though you always get in ten minutes after the big picture has started, and no-one will tell you the plot, so you have to work it out all yourself from the clues.

we can go back to the cave if you like.

I don’t think you should ever feel like you’ve achieved everything.

社會大腦假說認為，我們的智力進化是為了管理復雜的社會生活。