Richard Feynman said . . .
"The first principle is that you must not fool yourself--and you are the easiest person to fool."
Hemingway said, "The most essential gift for a good writer is a built-in, shockproof, shit detector."
“For me, the real question is not about Fredrickson or Losada or Seligman,” Sokal says. “It’s about the whole community. Why is it that no one before Nick—and I mean Nick was a first semester part-time Master’s student, at, let’s be honest, a fairly obscure university in London who has no particular training in mathematics—why is it that no one realized this stuff was bullshit? Where were all the supposed experts?”
(Besides the obvious lesson, there's another important lesson here: the graduate student would have gotten nowhere fast if he hadn't first contacted two senior people who paid attention and who had plenty of juice.)
See also "How Science Goes Wrong".