Zoo hypothesis

Well, I doubt that this is a totally "new" theory, but it does seem to be a plausible way out of the Fermi paradox. Though it may be that the original and plausible assumption that there must be other life in the universe is wrong. Or it could be, though almost mathematically impossible, that we are the first or last planet in the cosmos with evolving life. But this is not the only paradox that defies explanation.