Back in the 1990's, we had lots of tools to write better mathematics: LaTeX, HTML, Mathematica notebooks, and so on. But it felt like nothing had really converged yet. Technology that seamlessly mixes symbolic equations, illustrative-and-explicative annotation, and runnable code is, I then expected, not to be anticipated before my distant retirement and death. Given the preceding decades of cripplingly underfunded and glacial programming language evolution - that seemed a similar kind of society-hobbling infrastructure challenge that we just don't handle well. Now here we are, 3 decades later, and languages are in a far better place... though with pace still throttled by poor funding. Perhaps someday math tech will be too. Large-scale hypertext, and GUIs, also managed the "and now, what you've lonnnng been waiting for, tada!" transition.