Is really fast on LaTeX, so fast that he does his scratchwork on LaTeX instead of on paper? To think of it, all it takes is getting used to the new ways the symbols are arranged. Once you're used to those, you can then do computations on sight. The skill needed for solving such problems, short term visualization, should not favor doing problems via paper over doing problems on LaTeX. Do you know anyone who has completely abandoned paperwork of all forms in favor of LaTeX? (this is starting to sound very attractive to me since I'm very messy and am really starting to lose track of all my notebooks) I know that at one college, students often LaTeX up notes in class.