Colorless green ideas sleep furiously love

Colorless green ideas sleep furiously


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  • A sentence composed by Noam Chomsky in his 1957 Syntactic Structures as an example of a sentence that is grammatically correct (logical form) but semantically nonsensical. The term was originally used in his 1955 thesis Logical Structures of Linguistic Theory. The sentence has no understandable meaning, and therefore demonstrates the distinction between Syntax and Semantics. As an example of a category mistake, it was used to show inadequacy of the then-popular probabilistic models of grammar, and the need for more structured models. (Wikipedia)

    June 8, 2011