Sigh.... You're apparently impressed by the fact that spunkets is arguing for "truth" on the basis that it is impossible to know anything.
Not much to admire in an argument like that.
No, it is you that is missing the point. We all have to start from somewhere. That somewhere is unprovable. We accept that start as axiomatic. If you don't admit that, then you are on a fools errand with respect to logic.
Amazing.