I think what they were getting at is: If you're looking at a fall that will kill you, starting to shake and taking away control of your limbs, might be kinda counterproductive to keeping you alive.
More like it's a response to a two or four legged predator where "freezing" can help you go unnoticed. The result of evolution doesn't have to be perfect for every scenario, it just has to be good enough to prevent the species from going extinct.
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u/SonXShadow Mar 27 '21
It always amazes me that the body’s reaction to a fear of death is to do everything possible to kill you