I agree. Since it's all about writing math for presentation and not inputting math for calculation, having to learn a supplementary markup language to learn mak

I agree. Since it's all about writing math for presentation and not inputting math for calculation, having to learn a supplementary markup language to learn makes no sense. There is no way you get back the time invested in any meaningful way, unless you write math books for a leaving, I guess. Some sort of keyboard only markup language for inputting complexe math calculation seem like something worthwhile at first glance. But then you realize that you still need some specialized keyboard keys (and/or macro) if you really want to have completely "inline" (single line). But at the end you get something that's extremely unreadable and you find out that what's actually needed is computing software that both has a way to write and compute math as we used to on paper. The 3D aspect is extremely important for comprehension/readability, the only time it makes sense to lay out the equation in some sort of inline markup is for rendering when it's part of a larger document compilation process. And plenty of people use Microsoft Word or some other sort of GUI to avoid even doing this... Also, you realize that nowadays, pen tablets are extremely cheap and pen input is very simple, so what is really needed is the same type of software that exists on tablets to convert math pen input into formalized markup representation that the computer can understand (no need for the end user to see the underlying mechanics). And voilà, you can have math input without wasting too much time with a markup language.