So we now know that Graham's 8 directions have nothing to do with Dan's 6 directions, yes? Because they don't at a minimum even consider the up/down dimension. Doesn't that seem of some passing interest to you?
If it were just a matter of adding jumping-jacks to happo-undo, would it be an important point of discussion at all? One is talking about directions of stabilization or force generation that come in pairs - i.e. for some parts to extend up in space, others must extend down against something, or for some parts to sink down with the aid of gravity, other parts must rise up. The other is talking about just a movement exercise. They're just not on the same page, entirely different chapters of the book.