Tough one uh?

And the crux doesn't even lie with our inability to cite the properties necessary that define fact, per se, it lies with the implications:

a) when we are unable to come up with the answer, then how can we expect, and more importantly, trust, ourselves to discern fact from fiction indeed?

b) it forces us to re-evaluate what we think we know are facts, which we apparently can't since we cannot answer the question.

c) we're stuck in a loop?