I once had my bicycle stolen.
There is no evidence that aliens took it (or that they even exist) - but I can't rule them out.
There is no evidence that unicorns took it (or that they even exist) - but I can't rule them out.
There is no evidence that super-powered monkeys took it (or that they even exist) - but I can't rule them out.
There is no evidence that the flying spaghetti monster took it (or that he even exists) - but I can't rule him out.
There is no evidence that Santa Claus took it (or that he even exists) - but I can't rule him out.
There is no evidence that the tooth-fairy took it (or that she even exists) - but I can't rule her out.
There is no evidence that the Easter bunny took it (or that he even exists) - but I can't rule him out.
No wonder the police had trouble tracking down the culprit...my bike could have been stolen by almost anything and anyone!!
"There is no great invention, from fire to flying, which has not been hailed as an insult to some god." J. B. S. Haldane