Re: Why Not? Just follow what is seen and ask establishment authorities for more of the evidence.
"What about a best plan being some sort of very complex quantum computer that has already tried all possible bit patterns simultaneously, has processed all metadata"
Such a hypothetical machine would, by definition, know everything that there was to know. Gut feeling is that it would probably immediately suicide out of extreme boredom, just to find out what (if anything) was on the other side.