[nonameiguess]

The thing is the base rate probability that interstellar travelers got here from elsewhere in the galaxy, can either survive on our planet or brought enough with them to survive in space, have been here for decades and managed to never be concretely detected, exist at all as a form of life seemingly capable of understanding and communicating with us, building structures and traveling vessels similar to what we would use, even with roughly humanoid body morphology, is so low that virtually any other possible explanation, no matter how unlikely, is still more likely.

[jeremyjh]

Any interstellar travel of biological life forms is extremely unlikely. I think it’s so unlikely it may not ever happen even once in our Galaxy, even though it is possible, it just doesn’t make sense. If we go to the stars it will be as uploads. The idea that gray skinned humanoids would come here to play peek-a-boo with pilots and never make global contact is so far beyond unlikely it boggles my mind.