The Problem With Single Letter Variable Names

One of the problems is when you do like nested loops, and you're trying to just make your variable names as short as possible. There is a problem with single letter variable names. Certainly, loop counters can be named i, j or k, though never l if the scope is small. And so if you use names ar pronounceable, it'll be easy for you to talk about it with somebody else - which is a big deal.