It might even prove to be sheer folly; they could die in the first few minutes of the descent.
I happen to believe in miracles, but it would be sheer folly to depend on them.
As for making an attack before the jewels left the store, that would be sheer folly.
All the same, the inhabitants' plan to turn it into class M seemed like sheer folly to him.
And how do you measure the sheer romantic folly of his ambition.
To you, no doubt the sheer folly and madness of such a project will be more than obvious.
In my condition it would have been sheer folly to attack a man who was immune to these effects.
One might look at such an undertaking as sheer folly.
It would be sheer folly to believe a Council of 25 members could ever reach unanimous agreement.
That would have been sheer folly aside from what had already occurred.