The lion's share of science and scholarship is founded on peer review:
The findings of experts are vetted by qualified fellow-experts for correctness, importance and originality before being published; this validates the results and serves as a filter, to protect other scientists and scholars from risking their time and effort reading and trying to apply or build upon work that may not be sound.
That's the lion's share of science and scholarship.
But some scientists and scholars are peerless: Their work is at such a high level that only they, or a very few like them, are even equipped to test and attest to its soundness.
Such is the case with the
work of
Grigori Perelman.
It is a mistake to try to generalize this in any way: it doesn't scale. It does not follow from the fact that a rare genius like Perelman can transmit his huge and profound contribution by simpling posting it publicly on the Web -- without refereeing or publication -- that anything at all has changed about the way the overwhelming majority of scientific and scholarly research continues to need to be quality-controlled: via classical peer review.
Nor has this anything at all to do with Open Access. In paper days, Perelman could just as well have snail-mailed his proofs to the few people on the planet qualified to check them, and if, having done that, he was content to leave it at that, he could have done so. They would have been cited in articles and would have made their way into textbooks as "unpublished results by G. Perelman (2003)."
For the quotidial minor and major contributions that are researchers' daily bread and butter, formal publication is essential, for both credibility and credit. For the occasional rare monumental contribution or masterpiece, they are supererogatory.
Nothing follows from this.
OA continues to mean free online access to peer-reviewed research (after -- and sometimes before -- peer review), not to research free of peer review!
Stevan Harnad
American Scientist Open Access Forum