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a blind alley

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a blind alley

A metaphorical path that leads nowhere; a dead end. After spending years trying to prove his hypothesis but failing to get the results he had hoped for, the physicist feared that he had wasted too much time heading down a blind alley.

See also: alley, blind

a blind alley

a method of thinking or acting which is not effective because it does not produce any results The latest evolutionary theory may turn out to be a blind alley.

See also: alley, blind