It's not a matter of finding out the solution to some mystery, a solution that can meet all challenges and hence a completely different kind of knowledge from any hitherto, but rather a belief that the basic topology of experiencing can undergo a complete change into something that does not give rise to or depend on the same kinds of singularities, such as the idea or phenomena of a self and its metaphysical difference to that of world, or the notion of something behind or prior to experience, or time and space and causality - the kind of thing that is well-described, but not exclusively, by Kantian philosophy say. This way or organising the totality of experiencing is idiosyncratic, is of its time and culture etc., but is of the same family as any known from history. And what about that belief? It's not without some evidence, but does it go too far, or not far enough?