Another example: arxiv.org proofs of P != NP, FTL, perpetual motion, grand unified theory, etc. The signal-to-noise ratio of crackpots to experts is just too d

Another example: arxiv.org proofs of P != NP, FTL, perpetual motion, grand unified theory, etc. The signal-to-noise ratio of crackpots to experts is just too darn high. This is one example where academia & credentialing serves an important purpose, even if academia can be pedantic & insular at times.