One hundred percent certainty may have been a practical impossibility, but his squad needed him to be infallible.

These codes rely on the practical impossibility of factoring very large numbers.

But what happens when diversity means groups so different that mutual tolerance becomes a practical impossibility?

Killing them all, desirable though it might be, was a practical impossibility.

The film takes a deeper look into the practical impossibility of living an honest life in India.

The English custom of wife selling largely began in the late 17th century when divorce was a practical impossibility for all but the very wealthiest.

So if we were to get a pattern we should need thousands of pickups-a practical impossibility.

If you're paying your own bills, that kind of creative approach is a practical impossibility.

If it is a practical impossibility to leave, you might consider going to the person's superior and registering a formal complaint.

This amendment, certain to be rejected, is based on a practical impossibility.