That sounds like Rick Dyer's idea.
It sounds like a good many people have made up their minds on this issue. I think I will leave it open.
It's one thing to keep an open mind as evidence comes to light. It's quite another to hold to ideas in spite of evidence which contradicts them. That, in effect, is NOT keeping an open mind -- to the possibility that the first idea was wrong.
So, since there's no physical evidence, we go by testimony. There's already LOTS of evidence concerning how easily we can be fooled, no matter how strongly we "believe" we know what we saw.
I keep an open mind on things like Bigfoot, in that I will certainly evaluate evidence as it comes to light. But I also weigh probabilities, such as the likelihood that this species has thus far continued to avoid so many determined searches for any physical evidence (and the numerous hoaxes along the way), balanced against how easily we can see and hear things and hastily "fill in the gaps" to find an answer. Because for many, ANY answer is preferable to NO answer, even if that means making something up.