Here’s a belief I’ve held for a while but only recently been able to put into words: explanatory comments are often easier to understand than explanatory variable or function names. Consider a complicated expression with multiple sub-expressions. This expression is going to be difficult for the next person reading this code to decipher; we should make it easier for them. There are a couple of ways to solve this. We could break down the expression into sub-expressions, and assign those sub...
