Icehawk78 comments on An Alien God - Less Wrong
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Yes, and it would sustain less critical damage. I'm sure that both benefits contribute to the preservation of tail-rattling traits.
All of these sound like a posteriori justifications than a priori predictions. Good ones. But still.
That's kind of the point of this article. Evolution doesn't "choose" something, it just has changes happen, and if, like a rattle happening to scare off threats or reduce lethal damage, it aids survival, then it increases in the population.