The best thing about the internet is that it works like a massive public library, packed with knowledge on nearly every subject you can imagine. The catch, of course, is that not everything gets fact-checked, and plenty of misinformation manages to slip through.

That’s why these Redditors stepped in to set the record straight, debunking popular beliefs many still take as truth but are actually pseudoscience. Scroll down to discover some of their most eye-opening posts and see if any catch you off guard.

Lie detectors. BoredAtWork1976: There's a good reason polygraphs aren't admissible in court -- its junk science. It really just measures how much stress the subject is feeling, and then it assumes that any sudden surges in stress mean the subject is lying (as opposed to the subject being

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