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by racer-v 3094 days ago
Each step along the way must produce a net benefit or it gets discarded.

Maybe so, but the benefit could have just been individual fitness signalling (like a peacock's tail) without providing any advantage to the species as a whole until the big "payday".

1 comments

A peacock's tail can be seen; how do you propose the other sex fell in love with the brainier homo sapiens? It's a lot more likely that intelligence provided a net benefit.
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If with his tongue he cannot win a woman."