Most of the time, it assumes the decision maker has perfect knowledge.

But what he has found recently gives us perfect knowledge of the painting.

But this is certainly not the case for an attacker with perfect knowledge.

We don't know that our attacker will have perfect knowledge.

Who is so wise as to have perfect knowledge of all things?

Of course, perfect knowledge would be impossible, but you can always get closer.

If she could only give up, relax, and live in the perfect knowledge that there was no hope.

Not perfect knowledge, but the station chief was very concerned.

Not all of us have perfect knowledge I guess.

It has to be, because you don't have perfect knowledge of the enemy.