|Donkey sentences, philosophy: term for logical problems, which preferably, but not essentially refer to donkeys. An early example is Buridan's donkey. A modern donkey sentence is "Geach's donkey" "Anyone who has a donkey beats it." Formal logic is here too rigid to map the possible limiting cases that are not problematic for the everyday language. See also existential quantification, universal quantification, range, scope, quantification, quantifiers, brackets, branched quantifiers.|
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|Donkey Sentences||I 686
Geach’s donkey/Geach/Brandom: "Every man who owns a donkey beats it" - problem: an existential quantifier is relativized to a universal quantifier "A donkey" to "everyone" - different from the original (x: Man) (Ey) (y = ass) (own (x, y)> Beats (x, y)) is compatible with the fact that a donkey is not beaten - .. + .. who does not insist on rules can be interpreted as follows: (x) (x man) (y) (y ass) .... Bach-Peters-phrases: problem: intersecting anaphoric chains.
Expressive Vernunft Frankfurt 2000
Begründen und Begreifen Frankfurt 2001