Knowing how evolution works gives you an enormously powerful tool to understand the living world around you and how it came to be that way. (Though it's notoriously hard to use this tool correctly, to the point that I think people mostly shouldn't try it use it when making substantial decisions.) The simple heuristic is "other people died because they didn't have this feature". A slightly less simple heuristic is "other people didn't have as many offspring because they didn't have this feature".

So sometimes I wonder about whether this thing or that is due to evolution. When I walk into a low-hanging branch, I'll flinch away before even consciously registering it, and afterwards feel some gratefulness that my body contains such high-performing reflexes. Eyes, it turns out, are extremely important; the inset socket, lids, lashes, brows, and blink reflexes are all hard-earned hard-coded features. On the other side [...]

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First published:
August 14th, 2025

Source:
https://www.lesswrong.com/posts/bkjqfhKd8ZWHK9XqF/should-you-make-stone-tools

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Narrated by TYPE III AUDIO.

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