There are thousands of things on this earth that I can't identify, but If I started spinning yarns about what I thought they were, I might end up in a rubber room in a sleeveless jacket.
I don't understand how folks can believe, that a "civilization" for lack of a better term, could be sophisticated enough for intergalactic travel, violating the laws of what we think we know about physics, but could not observe earth or earthlings without being caught. If they are there, and they didn't mind being caught, they would have announced themselves in uncertain terms, long ago. If our government had hard evidence of such things, there is no way in hell it could have been kept secret for the last 80 years. In any case, assuming that we had been visited, I doubt that such a backwards, violent, ignorant, fantasy driven world would warrant return visits.
I certainly do not believe that we are alone in the Universe, but neither do I believe that we have had fleeting glances of our neighbors flying through our atmosphere. It makes no more sense than the religions of the world. If I was smart enough to get around the light speed limit, I think I could miniaturize my observation platforms where they would not be visible to radar or the human eye, or even better observe from a great distance.
Flying saucers reek of bullshit to me.
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