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
Jarred	JER-əd, JAR-əd	English
Kira (2)	KEE-rə	English
Valtteri	VAHLT-te-ree	Finnish
Andrina	an-DREEN-ə	English (Rare)
Manami	mah-nah-mee	Japanese
Arundhati	-	Hinduism, Indian, Hindi