Plain language is of huge importance in programming, especially in team environments. Common convention (and courtesy) in programming demands comments in code. Comments are small pieces of plain English that describe what a specific line of code, a few lines of code, or an entire function does. If a programmer were to be handed a project to maintain which was developed by someone else and there were no comments describing what the code does and how, then it would be a huge time sink to read through it all to understand it. That is why good code always has lots of comments in plain language so even a novice programmer can have an idea of how something works- even if that person doesn’t understand the actual code behind it.