Loki's Wager

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Loki's Wager is a form of logical fallacy. It is the unreasonable insistence that a concept cannot be defined, and therefore cannot be discussed.

Loki is a trickster god in Norse mythology, who, legend has it, once made a bet with some dwarves. The price should Loki lose the wager, it was agreed, would be his head. Loki lost the bet, and in due time the dwarves came to collect the head which had become rightfully theirs. Loki had no problem with giving up his head, but he insisted they had absolutely no right to take any part of his neck. Everyone concerned discussed the matter; and, one could suppose, they are discussing the matter still. Certain parts were obviously head, and certain parts were obviously neck, but neither side could agree exactly where the one ended and the other began. As a result, Loki keeps his head indefinitely. However in retaliation for this trick it is said the dwarves sewed his mouth shut.

The fallacy's focus on over specification makes it in some ways the opposite of hasty generalization and could be considered an extreme form of equivocation.

Informal fallacies
v  d  e
Special pleading | Red herring | Gambler's fallacy and its inverse
Fallacy of distribution (Composition | Division) | Begging the question | Many questions
Correlative-based fallacies:
False dilemma (Perfect solution) | Denying the correlative | Suppressed correlative
Deductive fallacies:
Accident | Converse accident
Inductive fallacies:
Hasty generalization | Overwhelming exception | Biased sample
False analogy | Misleading vividness | Conjunction fallacy
Vagueness:
False precision | Slippery slope
Ambiguity:
Amphibology | Continuum fallacy | False attribution (Contextomy | Quoting out of context)
Equivocation (Loki's Wager | No true Scotsman)
Questionable cause:
Correlation does not imply causation | Post hoc | Regression fallacy
Texas sharpshooter | Circular cause and consequence | Wrong direction | Single cause
Other types of fallacy

[edit] See also