Captcha gotcha.It is ironic that the article "Games Theory" (SN: 3/17/07, p. 170) describes a captcha [completely automated au·to·mate v. au·to·mat·ed, au·to·mat·ing, au·to·mates v.tr. 1. To convert to automatic operation: automate a factory. 2. Turing test Turing test, a procedure to test whether a computer is capable of humanlike thought. As proposed (1950) by the British mathematician Alan Turing, a person (the interrogator) sits with a teletype machine isolated from two correspondents—one is another person, to tell computers and humans apart] and then goes on to demonstrate how to defeat it. An automated program that is supposed to pass this difficult computation Computation is a general term for any type of information processing that can be represented mathematically. This includes phenomena ranging from simple calculations to human thinking. test just has to forward the captcha image to a real person, at a different Web site, who will then unwittingly assist the automated program. The only challenge is to make it "fun" or otherwise compelling for the unwitting person. JOHN HASELSBERGER, ALLENTOWN Allentown, city (1990 pop. 105,090), seat of Lehigh co., E Pa., on the Lehigh River; inc. as a borough 1811, as a city 1867. The largest city in the agricultural and industrial Lehigh Valley, it is a commercial, financial, and government center. , PA. |
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