I like to test ideas by looking at them backwards. If there have been alien visits to earth, encounters between aircraft and alien craft, squadrons and flotillas of alien craft over this city or that, then we have to assume that those visiting aliens observed us more or less as we are - a species with a mastery of materials, construction, flight, telecommunications and so on and so on. Not a bunch of amoeba crawling about on a cave floor.
Why, then, in all those encounters, if you accept for a moment that they were indeed encounters, has there never been any recorded communication, or attempt at communication? In all of those encounters, why has there never been the equivalent of a decent photo-stop, pee break, overmnight solourn, alien dirty weekend or whatever you want to call it.
Are we so unattractive a species that these visitors might have come all thiis way (and presumably from multiple distant places- not just one) and not attempted some form of contact, exchange of messages - why haven't we had a M.O.U with the Sirius B folks?
If an idea is credilble, it generally balances out when looked at from a different perspective. The alien visitation idea does not. At least not to me.
Peter
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