Or maybe they know in their own way without research.

Each knew without a word what was in the other's mind.

He knew without further evidence that this was the beginning.

We know without a doubt he was in the car.

Sometimes they just know things without the telephone or anything.

He could know you in all those same ways common to one without the gift.

How could she know anything about herself without a mirror?

She knew without a doubt that Seven's try would be the best any of them could do, and then some.

"I mean, how else would they know about us without some ability to sense thoughts?"

He knew without a doubt that this time he'd found the right man.