Sure feels that way, sometimes. One can begin to doubt that there is intelligent life on earth, some days! My guess is that ancient people did have visitors from Someplace and that they hoped for a return visit. But it may have been rather like that film about a chap who found a Coke bottle -- The Gods Must Be Crazy. I sure hope we are not the most intelligent life form in the universe -- this or any other universe. Seems likely that there are beings who have managed better. I sure hope so. Bummer, if we bipeds are the best, brightest there is.