Someone here mentioned this idea, and I wish to present a possible explanation for review: Earlier, I proposed an hypothesis that mind existed independently of the particular neural substrate we see it implemented in with man (and others); in this view only the dynamics are essential for a mind. Perhaps that is true with everything. Is this to mean a car exist independently of the physical implementation of the car? Maybe so. It's dynamics: movement and the chemical reactions which power it, are really at the heart of what it is to be a car and not the particular shape of it or even what it is made of. What of a rock? It's made of atoms, molecules and the forces which bind them. Precisely: the forces which bind them, and the forces which create the particles which they are constituted: I've heard it said, "the Wave Equation IS the electron". The dynamics of those forces, expressed somehow in another substrate might equally well exhibit "rock-ness". Perhaps everything can be so expressed. From this perspective then, dynamics is at the heart of everything. But that dynamics is ephemeral and really not "physically" existing for the same reason "2-ness" has no physical existence but rather only that in which it is implemented. And so, emptiness is at the heart of everything because the one essential ingredient of existence is that which does not have a physical existence: dynamics.