This sounds great. One hopes that in the years to come, all learning takes on such a multi-faceted structure. I only wish there was a linear "wall" of learni

This sounds great. One hopes that in the years to come, all learning takes on such a multi-faceted structure. I only wish there was a linear "wall" of learning, from baby arithmetic to algebraic cohomology, string theory, etc., with a clear(ish) path* of precedence for when you get stuck. (*generalized path, I suppose) Maybe give latex a symbolic math system while we are at it, so that it may check our notes as we type them. ;)