I do not think anything I wrote above depends on using probability to discuss reality.
The appeal to absence of many true beliefs is irrelevant, as you have no means to determine truth beyond skepticism.
Please elaborate. I believe it is not only relevant, but decisive.
You believe that the world exists, your memories are reliable, etc. You argue that a system that does not produce those conclusions is not good enough because they are true and a system must show they are true. But how on earth do you know that? Assuming induction, that your memories are reliable etc to judge Epistemic rules is circular.
You must admit it is absurd that you know the world exists with certainty, therefore you must admit you believe it exists on probability. Therefore your entire case depends on the legitimacy of probability.
Before accusing me of contradiction, remember my posistion all along has a distinction between faith and rational belief.
I've raised arguments for philosophical scepticism before, which have mostly been argued against in a Popper-esque manner of arguing that even if we don't know anything with certainty, we can have legitimate knowledge on probabilities.
The problem with this, however, is how you answer a sceptic about the notion of probability having a correlation with reality. Probability depends upon axioms of probability- how are said axioms to be justified? It can't be by definition, or it has no correlation to reality.