Prove that I don’t have an invisible, intangible, undetectable teapot hidden inside my ass. You can’t. Even proving I don’t have a perfectly normal teapot in my ass is impossible, because I can just continue claiming that I do, and that you simply haven’t located it yet.
Proving something exists is easy, you find it, and then you point at it.
Proving something *doesn’t* exist requires that you eliminate all possible cases in which it could exist and you would not perceive it. Which is impossible in any practical sense.
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