"But it appears unlikely that he would have any useful knowledge."

I had taken to the man; he liked gossip, too, and might have some useful knowledge.

"But you have to say at what point does this become really useful knowledge that's worth the price you're paying for?"

But nothing that added to my sum of useful knowledge.

No bit of useful knowledge had ever come from the plates.

That is to say, beyond a point at which useful knowledge can be obtained.

Even knowing what the literary types thought was the best of their time is useful knowledge.

"Telling someone they have two years to live isn't useful knowledge," she said.

The academy was set up to find useful knowledge, and to write about it in Swedish.

We should all like that, and I think it would put considerable useful knowledge into our heads.