Oh xkcd!



(one of my nerd fantasies is to go back in time and 'fix' mathematical notation so that we a) don't use so many letters that look like each other (m and n, i and j) and b) don't use letters that look the same in capital and lower case (x, y, and s). Also, if we could get all the science fields to agree on what certain letters mean, like i, that would be awesome)