I was going to say 'shouldn't this be in Paranoia', but that might bias the sample a wee bit
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No angels or aliens or anything else for me thanks.
EDIT: By aliens I presume you mean ones actually secretly visiting the earth and rigorously anal-probing every redneck in sight.
If you simply mean life on some other planet, somewhere in the universe, I would plant myself in the "don't know" camp (not having visited every other planet in the universe, I cite a lack of evidence to make any kind of consclusive decision)