I'm still a little confused. I chose NES specifically because of its 1-history nature. Regardless of piece history context, the branching forward through the "sequence possibility space" has a constant structure. As in it's always covering pure random equally at every decision point. This is unlike eg. TGM where the diversity of pieces in the history changes the branching structure. So in my mind the flawed calculation is not using anything that isn't 100% known before you started. Am I missing something?