Full Idea
It is controversial whether knowledge is a state of mind, or a composite state involving a thought about something, plus its existence.
Gist of Idea
Is knowledge just a state of mind, or does it also involve the existence of external things?
Source
Tim Crane (Elements of Mind [2001], 1.5)
Book Reference
Crane,Tim: 'Elements of Mind' [OUP 2001], p.18
A Reaction
Pinpoints the internalism/externalism problem. Knowledge is a special type of belief (but maybe belief with external links!). Tricky. I vote for internalism.