Epistemology
Introduction E9F5FC Questions FFFFC0 Software 
See: Polytopes, Four classical algebras draft, Letters from Robert? Understand why there are three infinite families of regular polytopes. What is the relevant definition of a polytope? and regular polytope? Why are there only 3 regular polytopes in higher dimensions? Imagine polytopes as formed on a circle or sphere. If it is a circle, then how do we interpret the crosspolytope? Is it a square? And the simplex? Is it a triangle? And the hypercube? Is it a square? And in one dimension? Literature
