I enjoyed the show, i thought the guest was intelligent and articulate.
Articulate? did anyone try to count how many times he said
"whatever"?
Sometimes physical evidence gets lost. Sometimes it doesn't, but even having physical evidence doesn't help us much because the results turn inconclusive.
Vallee explains this brilliantly in his book Confrontations. He devotes an entire chapter on the issue of physical evidence, like traces of metal recovered during an alleged UFO case —e.g. the Ubatuba case— the analysis doesn't throw anything remarkable, but then he makes the brilliant analogy that at this point it's as if we tried to analyze the contents of a Lamborghini's ashtray to deduce how it runs.
He also tells another brilliant anecdote on how he and his mentor Aime Michel played a little game: Jacques gave Michel a discarded computer 'punching card' and told him "pretend I'm a 14th century farmer and that i found this strange object while plowing my field; you are the venerated Abbot of the local monastery, a learned man who has studied the holy texts and the classical philosophers. Now tell me, father, what is this object and what should I do with it?"
So Michel takes the card and examines it, and after a moment returns it to Vallee and with a mischievous smile answers "burn it my son. This is clearly something of the devil."
This is a good example of how physical evidence would have been easily lost in ancient times. For even if the abbot had had the good sense of keeping the card and studied, and even if back in the 14th century they would have counted with microscopes, there's little knowledge they would have gained. The abbot would have found a number of impurities, and probably considered them to be contamination, without ever figuring out that the precise placing of the impurities is what gives the card its electrical properties.
Ed also touched on something Vallee mentioned in his book Messengers of Deception, on how it's inadvisable to enter the study of UFOs with a scientific attitude, because the phenomenon 'deliberately' attempts to be deceiving and confuse the observer. It's better to approach it from the perspective of a counter-intelligence agent, and that's what Ed tried to explain, though not very effectively IMHO.
But then the interview moved from improvable (and improbable) Internet mythologies to personal accounts, and that did pique my interest.