So every single one of them are liars and publicity seekers? Try again. There's no denying that some are liars/obvioux hoaxes of an elusive unknown creature such as Sasquatch. As far as the Lochness Monster? I definitely don't believe in it.
For one you dont have as many credible sightings involving a sea serpent than you do of an unknown primate. You have scientists who have studied this creature, you have hundreds to thousands of credible sightings, and you have to come to the conclusion that there is somethng out there. Hey I may be wrong, the Lochness Monster could possibly be real and Bigfoot for all I know can be a hoax.
However I just don't believe that EVERY single sighting involving Bigfoot is a lie, hoax, peple getting high, or publicity seeker. You just have too many reports from sane individuals to provide such a claim.
And you do realize that the supposed "lost tribe" you're talking about was proven to be a hoax right?
The lost tribe I'm thinking of, as far as I know, is not a hoax. I would like a link, if you have one.
What qualifies as a credible sighting?
Look, I'm very weary in general about believing something simply based on hearsay. Hundreds/thousands of sane people may well claim to have seen Bigfoot but that doesn't mean that's what they saw.
I'll put it this way. Thousands, nay, hundreds of thousands of perfectly sane people will SWEAR blind that Barack Obama is a Muslim and mean it. Does that make it true? No.
If you serve on a jury, you need more than a witness statement to convict someone. If a witness statement is enough to convince you of guilt with no reasonable doubt and no physical evidence, you don't deserve to serve on a jury.