Accepting the postulate that UFO contact is a basically deceptive experience, and that there is a screen of illusion, including temporarily physical "props" and so on, why is it restricted to UFO type events? IS IT restricted to UFOs? Or is there a reporting bias?
That is, perhaps there are millions more experiences which are more "mundane" or are generally assumed to be "actually happening", even though they are also manufactured by the same entities behind the UFO contact...
For example, rather than looking at the "clues" to what is behind UFO encounters, why not look for other experiences that share the same features?
Experiences that begin in isolation or a strange zone of quiet, or experiences at night or during sleep; experiences beginning with a bright light; memories of medical experimentation or sexual molestation; memories of unknown flights or travel; dreams or memories of being in a cave or a military base; even unmarked helicopters or apparently too frequent flights of mundane helicopters overhead...
The insidious thing is when observation of phenomena that other people block out or ignore becomes hypersensitivity, leading to what is usually called "paranoia"...
I remember many years ago now, twenty years ago in fact, there was a chance encounter on New Years Eve between a party of us walking home from the beach and a fairly old man, obviously tipsy himself.
He had just been sacked the last week of the year and was pretty upset about it.
As a consequence of his upset, he went to great lengths to tell us, in vino veritas as it were, all about the job he had done for Telecom (Telstra as it now is).
Basically, his job was to engineer and supervise the installation, everywhere in the country, of "magic boxes" on the telephone poles and junction boxes, etc.
These magic boxes fulfilled two functions. Firstly, they were "simply" devices to allow monitoring of domestic telephony traffic - a fact confirmed in years since as the Echelon and Octopus conspiracies were unveiled. The second function, which he touched on, was that these magic boxes could make people hallucinate. Hallucinate... He realised he'd said too much when what he was telling us sobered us up, and he hopped on the last bus out of the city before finishing what he was lecturing us about. Intriguing stuff though.
But as he said to us at the time,
"Who would you tell? And who would believe you?"