If the element involves a result, he is practically certain that the result will occur.

I was practically certain my insurance policy didn't cover acts of gods.

She's so good that you're practically certain to win.

She is practically certain to say, "Oh, the thunder."

I was practically certain spirit guides were not supposed to say wow.

On the other hand, it was practically certain he would pay a visit to the Panicks.

It is practically certain that the Russians do not have them in production yet.

"Knowing" means that the actor was aware or practically certain that the death would result.

I will try to learn whether he really has a copy of the map, though I'm practically certain of it.

"It's practically certain, so don't worry about your money."