How To Use Fool's errand In A Sentence

More than a necessary evil, it has become a mandatory fool's errand.
In an age when the Air Force budget looks to increase only marginally, if at all, while simultaneously planning to buy several other major aircraft (new aerial tankers, new transports, new heavy bombers, and new helicopters), this plan to distend the fighter-bomber budget is a fool's errand. Winslow T. Wheeler: What Now, Icarus? Is Western Combat Aviation Falling Out of the Sky?
I may not know much, but I think I know a little bit about compositional practice — studying to be a composer is a lot of investigating how the old masters got from point A to point B, or even how they got to point A in the first place — and I can say that any attempt to generalize the way great works have come into being is a fool's errand. Spark plugs and transmissions
Anyone who hunts for a pizza-enjoying subsystem in a human being is on a fool's errand, and anyone who denies that a supersystem understands Chinese on the grounds that none of its subsystems do is making the same error moving in the other direction. The Myth of the Computer: An Exchange
We're all on a fool's errand, credit card in hand.

Peter Jackson undertook what seemed like a fool's errand and dared to film the unfilmable.
It's a fool's errand to try to psychoanalyse someone based on an hour in their company.
It is a fool's errand to try to divine arm's-length prices for intragroup transactions, particularly for valuable intellectual property (IP) that is never licensed to outsiders. Transfer Pricing As Tax Avoidance
All of the sophisticates and cynics insisted that having elections would be a bloody fool's errand.
It's a fool's errand to try to psychoanalyse someone based on an hour in their company.
There was a choice of risks: the risk of behaving with extraordinary incivility and unhandsomeness to a lady, and the risk of going on a fool's errand. The Dynamiter
Thus "hunting the gowk" is to send someone on a fool's errand. April 1st -- Feast of Fools
It's a fool's errand trying to get Lena to join in anything.