Geeklopedia [version 2.0]
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- Acronym for Completely Automated Public Turing Test to Tell Computers and Humans Apart.
- Computer scientists at Carnegie Mellon University coined the term in 2000 to describe codes they created to help Yahoo! thwart a spam problem.
- "Turing" refers to Alan Turing, a mathematician famous for his codebreaking work during World War II and, later, as a pioneer in artificial intelligence.
- In 1950, Turing wrote a paper that proposed a test in which a person in one room would ask questions of both a human and a computer in another to try to determine which of the respondents was human. If the judge couldn't tell which was which, the computer could be said to be able to think.

