Hmmm; having waded through to date, two thoughts arise (can't for the life of me describe the process by which they did, though);
first, could dualism be described simply as the 'analogizing of reality'; and non-dualism as 'the experiencing of reality' (or should that be 'eternity'?)
and second, i can't help commenting that this discussion hauls me back (kicking and screaming) to the old god/belief/religion discussions at aBuzz.
Which i noted were totally 'angels dancing on the head of a pin'.
there is a similarity here; except, the 'angels' are fascinating, and the 'dancing' is brilliant, and most, most, entertaining!