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
Oinone	-	Greek Mythology
Shanene	shə-NEEN	English (Rare)
Yelyzaveta	-	Ukrainian
Lena	['li:nə]
Seong-Hun	sung-hoon	Korean
Asim (2)	-	Indian, Hindi, Bengali