I mean that might be a red flag, but teenage curiosity aside, there were whole sites/subreddits dedicated to showing vids of gruesome deaths
That said, i wouldn't wanna know as a 'normal' person but if i saw it outta context, it might be helpful if you were suddenly in like a horror movie /situation to where it's like "Oh this is def a mangled body" tho you wouldn't hopefully be near anyone capable of doing it.
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Tho i wonder how many movie directors/ writers 'researched' those for 'accuracy' or so lol