Why, the fan in her hand was far more useful than Greek!
He would have been far more useful alive, but there were still things that could be done.
That would be far more useful in the near term than anything based upon Atom.
But he had a far more useful purpose in driving that cab.
What you are doing looks far more useful than anything I had in mind.
Though the computer is relatively fast, it would be far more useful with a hard disk.
"It would be worth a great deal for many things far more useful than prisons, actually."
Both could have been far more useful to him, in other circumstances.
It will certainly be easier than putting a man on the moon and far more useful.
It would be far more useful if you gave them some coaching in the game.