[mistermann]

> What possible answer do you think there could be to this question?

There are a few different classes/categories you'll see, but not many.

> Facts are true statements.

Do (non-specialized, as in scientific facts) facts require a proof, or not? And if not....

> Questioning what your interlocuter thinks a "fact" is isn't going to move the debate forward in any useful way.

Perhaps (is that future you see the real thing?), it may provide value though.