Formalizes the space in which all observer-opacity dynamics live. Defines voidspace as a three-dimensional manifold (visibility, reactivity, coupling) with Fisher information metric. Derives the demon lattice phase diagram (Gas, Fluid, Crystal, Vortex). Proves substrate independence. Peclet threshold Pe=4 for self-sustaining void circulation (Pandemonium). THE KEYSTONE paper.
Anthony W. Eckert (Mon,) studied this question.