Well, Fully, if one is seeking the truth, credentials do indeed matter, as does the discipline involved in a particular field. So does source for evidence – if the source is corrupt, then all the “thinking and logic” matters not a whit. Also, no axe to grind, as building an audience, selling more books, products, etc. Perhaps seeking notoriety is suspect, too, in your search. This might help out some:

The Only Man Who Has A Clue