Google is a knowledge exponentiator :-)
It does too well to be called a knowledge multiplier! :-)
Seriously I have a talent for pulling up useful random facts even when I knew next to nothing about a topic. Always have. Before Google it was a moderately useful talent. After Google it gets amazing results because those facts get leveraged into searches.
As for the computerized fact checker, that would be cool, and what is scary is that I think it is getting close to being feasible.
Cheers,
Ben
"... I couldn't see how anyone could be educated by this self-propagating system in which people pass exams, teach others to pass exams, but nobody knows anything."
--Richard Feynman