Hank Rearden wrote:Using some logic you should "know" absolutely nothing.
This sounds like something I might have said. Let me explain.
It was once said that we can be certain only of our own ignorance.
The reasoning behind this is really absract philosophy and it is sound (even if not practical).
So yes, we can "know" (i.e. be certain of) nothing.
The point is that certainty is impossible. But for the sake of practicality we must operate on probability.