The human mind is one of the most complicated things on Earth. Just think that basically everything we have and know, whether it's a product, an explanation for a phenomenon, or something else, once was just an idea in someone's head that they felt brave enough to express and develop.
Yet, that doesn't mean that every single thought that pops up in your head can reach such success. Some ideas might theoretically have some potential but don't have enough going for them to be realized. Just like these, let's say, theories in today's list that various netizens had, but have no proof for. Interested? Make sure to check them out!
More info: Reddit