Code is run more than read by Facundo Olano

This phrase is, by now, common programmer knowledge, a reminder that the person first writing a piece of code shouldn’t buy convenience at the expense of the people who will have to read it and modify it in the future. More generally, code is read more than written conveys that it’s usually a good investment to make the code maintainable by keeping it simple, writing tests and documentation, etc. It’s about having perspective over the software development cycle

There is a nice progression in this article. The final stage is - biz > user > ops > dev.