a fool's errand

an attempt to do something that has no chance of success Billions of dollars have been spent on long-range weather forecasting, but it's a fool's errand.

Common Names:

Name	Pronounced	Usage
RÓBert	-	Hungarian, Icelandic
Tasoula	-	Greek
Bryant	BRIE-ənt	English
Ally	['æli]
Kalina	-	Bulgarian, Macedonian, Polish
Hyginus	-	Ancient Greek (Latinized)