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This is the classical Turing Test:

Two humans involved, directly.

With Captchas (or Funtchas for that matter - let's say "Automated Turing Tests"), it look more like this:

Directly involved is only one human: The poor user. All the other guys are robots: spambot and antispambot. Or computers, or programs, for that matter. Then, we have more humans, indirectly involved:  the actual spammer, controlling the spambot by means of programming and the antispammer, controlling the antispambot by the same means.

Poor user, all alone with the bots...

19 Dec 2007 - 23:00
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