CAPTCHA is one of the "150 major events in computer science history", described as follows:
2000 Putting an unexpected practical twist on Alan Turing’s ideas from 1950, Manuel Blum, Luis von Ahn, and John Langford at Carnegie Mellon articulate the notion of CAPTCHAs (Completely Automated Public Turing tests to tell Computers and Humans Apart), the challenges—usually involving reading distorted text—that are used by numerous websites to discourage spam-bots That this is listed as a "major event" is indicative. (The CAPTCHA strategy is easily defeated: run a website to get humans to do the test; etc.) On Tue, Oct 25, 2011 at 11:42 AM, Raul Miller <[email protected]> wrote: > http://www.scottaaronson.com/blog/?p=524 > > Do you see "arrays" mentioned anywhere in there? > > I don't either. > > From this, I conclude that the author of that list does not find them > to be eventful. > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
