Oh, I absolutely agree.
However, regarding bigfoot, I do not believe there is a widespread conspiracy among gov't employees of various sorts to keep bigfoot under wraps. What incentive could be offered, what threat could be made, to keep every single one of upwards of 100,000 potential whistle-blowers quiet? You'd have to have something that appealed with equal effectiveness to those who think the public has a right to know, preservationists, those who think we need to wipe out the bigfoots, people who are just looking for fame for being the discoverer ... all those possible motives have to be silenced under one umbrella.
I don't see it. Norseman .. what could be offered to entice you to remain silent if you had absolute proof? Hiflier .. what about you? Anyone else in the conversation? If you had proof, what could be offered or what could be threatened to silence you?
It is inconvenient for the conspiracy theorists, but it has to be considered. How could such a conspiracy exist, what could it offer / threaten, and how could the conspiracy itself remain veiled yet affect so many people so effectively?
MIB