When you realize that the two halves that created the Aurbis by their interplay are not actually two opposite sides, and that there thus is no actual interplay, and that thus nothing really is except for that one thing that is and is everything, then you zero-sum.
http://www.imperial-library.info/obscure_text/sporedream.shtml describes the realization nicely. Also give the http://www.imperial-library.info/mwbooks/lessons.shtml#35 in the Sermons a shot.
Chim is knowing something more then that.