I'm very interested in this series. I was good, although not exceptional, at math up until high school, where I did fine in geometry, have completely lost all memory of the other math class I took while at that school, and then moved and had two terrible-fit math teachers in a row and barely passed stats to collect my math requirement in college. Things haven't improved since; I've been known to flee the room from excess math. I expect that with enough work I could get it back, at least in sub-areas of math without the properties that set me off and with a supernaturally accommodating teacher, but I'm not sure it's worth it; still, I'd like to know more about what exactly I lost. (If you could write this series without too much recourse to numerically dense examples or at least make them skippable, by the way, I'd appreciate it.)