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. 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. It is stated as follows: Three gods A, B, and C are called, in no particular order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is a completely random matter. Your task is to determine the identities of A, B, and C by asking three yes-no questions; each question must be put to exactly one god. History[edit] The solution[edit] Boolos provided his solution in the same article in which he introduced the puzzle.
Boolos' question was to ask A: Does da mean yes if and only if you are False, if and only if B is Random? Equivalently: If I asked you Q, would you say ja? See also[edit] 136 Creepy Wikipedia Articles. Logic/Paradox. Logical Paradoxes » The Barber Paradox. The Barber paradox is attributed to the British philosopher Bertrand Russell. It highlights a fundamental problem in mathematics, exposing an inconsistency in the basic principles on which mathematics is founded.
The barber paradox asks us to consider the following situation: In a village, the barber shaves everyone who does not shave himself, but no one else. The question that prompts the paradox is this: Who shaves the barber? No matter how we try to answer this question, we get into trouble. If we say that the barber shaves himself, then we get into trouble. If we say that the barber does not shave himself, then problems also arise. Even if we try to get clever, saying that the barber is a woman, we do not evade the paradox. Both cases, then, are impossible; the barber can neither shave himself nor not shave himself. Irresistible force paradox. The irresistible force paradox, also called the unstoppable force paradox, is a classic paradox formulated as "What happens when an unstoppable force meets an immovable object?
" This paradox is a form of the omnipotence paradox, which is a simple demonstration that challenges omnipotence: ("Can God create a stone so heavy that not even God is strong enough to lift it? "). The immovable object and the irresistible force are both implicitly assumed to be indestructible, or else the question would have a trivial resolution ("it destroys it"). Furthermore, it is assumed that they are two separate entities, since an irresistible force is implicitly an immovable object, and vice versa. The paradox arises because it rests on two premises—that there exist such things as irresistible forces and immovable objects—which cannot both be true at once. Origins[edit] In popular culture, Iain Banks refers to this paradox extensively in the novel Walking on Glass, and provides an alternative answer. Logical Paradoxes. Cleverbot.com - a clever bot - speak to an AI with some Actual Intelligence?