Quantum physics is the branch of physics that deals with the smallest things in the universe. If you know how it works, you can prove that particles can be two places at once. It is weird and counterintuitive and completely supported by all available evidence. Seriously, go read up on it (or just watch all of these) — it’ll blow your face off.
When something is exciting and strange and difficult to understand, a lot of people who don’t understand it will tell you they DO understand it and that if you give them some money, they’ll share the secret with you. This isn’t a law of physics, but it should be.
You might be thinking: “But Wordmonster, you just told me that quantum physics proves particles can be two places at once. Why should I believe that?”
Easy: You shouldn’t. Go learn about it from people who aren’t trying to sell you a book or a miracle diet or a solution to all of your problems. Put in the work. You won’t be sorry.