Colloquially, I know how to judge relative probabilities.

Philosophically (strictly), I don't know the probability that any of my conclusions are true (because they rest on concepts I don't pretend to know are true).

Again. my point is that it that to do justice to philosophical doubt, you need to avoid high probabilities in practical reasoning a laTaleb. But not everyone gets that. A lot of people think that using probability alone us sufficient.