But we also know this is not an exact science.

I just want you to understand this isn't exact science.

And that, as we know, is not an exact science.

"You have to understand that justice is not an exact science," he said.

If the theater were an exact science, it would be dead.

But we are not dealing here with an exact science.

Committee members know that their trade is hardly an exact science.

Will there come a day when medicine is an exact science?

Sail making has moved on from an art to an exact science.

Their job isn't easy, and it's far from an exact science.