There only appear to be three kinds of "UFO Aliens" reported, the very human looking "Nords",the "Hairy Dwarfs" and the big eyed "Grays"--with Grays making up over 90% of purported witness reports. LOGICALLY speaking, One would think that each Alien would look different if the report had been simply "made up". We might argue that the "Grey" image is widely dispersed in the public media, and people latch on to that----BUT THIS DID NOT HAPPEN until after 1977 with the Close Encounters of The Third Kind Movie. The art director himself, admits he patterned the CE3 aliens after the reports pryor to the movie.
The only logical conclusion we can draw is the witnesses, all over the world (especially the US) all saw the SAME THING---whatever it was. This is no proof that the grays are actual "aliens", but is pretty convincing evidence that SOMETHING having a common origin had been observed.---Hence, what we TAKE to be "Aliens" must exist.
What are the realistic possibilities?
1) A large, sophisticated organization is perpetrating a "hoax' of sorts, likely to disguise a secret project and or discredit any witnesses. This suggests a Government-backed operation Using the same "Alien" boogey or dummy to scare and confuse the witnesses. It was a mistake, however, to use the same "Alien" dummy each time. The consistency of the reports lends the witnesses a degree of credibility.
2.) Actual "Aliens" or an unknown "terrestrial" species. It would explain the consistency of the reports, but is an otherwise sort of "out there" explanation.
3) a simple hoax, and/or "untruthful" witnesses. this is even LESS likely than 1 or 2 The scope of the phenomena is much too wide spread, geographically, and would not be as consistent.
So what do you think? any other ideas. Discounting Media influence before 1978, of course.