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The Hardest Logic Puzzle Ever. The Hardest Logic Puzzle Ever is a logic puzzle invented by American philosopher and logician George Boolos and published in The Harvard Review of Philosophy in 1996.

The Hardest Logic Puzzle Ever

A translation in Italian was published earlier in the newspaper La Repubblica, under the title L'indovinello più difficile del mondo. The puzzle is inspired by Raymond Smullyan. 2010-02-24-determinism.png (588×819)

Working

Games. Clarke’s three laws. Clarke's Three Laws are three "laws" of prediction formulated by the British writer Arthur C.

Clarke’s three laws

Clarke. They are: When a distinguished but elderly scientist states that something is possible, he is almost certainly right. Nirvana fallacy. The nirvana fallacy is the informal fallacy of comparing actual things with unrealistic, idealized alternatives.

Nirvana fallacy

It can also refer to the tendency to assume that there is a perfect solution to a particular problem. A closely related concept is the perfect solution fallacy. By creating a false dichotomy that presents one option which is obviously advantageous—while at the same time being completely implausible—a person using the nirvana fallacy can attack any opposing idea because it is imperfect.

Under this fallacy, the choice is not between real world solutions; it is, rather, a choice between one realistic achievable possibility and another improbable solution that could in some way be better. History[edit]

Learning

The Parapsychological Association.