[__MatrixMan__]

But if the truth is unknowable, how does the autocrat know it?

I've only met a few people who are skeptics about the existence of facts--but I find that they're likely to be skeptics about other things too.

I think that if it's a position you arrive at via honest philosophical inquiry, it's not a hazard at all.

The position to be wary of is where you still believe in the truth, but are so beleaguered by the cacophony of voices claiming to know it that you're willing to accept that somebody else has access to it if it means that you get to just peacefully be on their side and don't have to bother sorting through it all anymore.

That is too say: claiming to know the truth is often a proxy for being too intellectually lazy to bother forming a good argument, and I think that nihilism is preferable.