"Do a single thing" is a meaningless qualifier. Redis is 70k lines of code and yet only "does a single thing" - runs an in-memory data store. IMO it's much mo

"Do a single thing" is a meaningless qualifier. Redis is 70k lines of code and yet only "does a single thing" - runs an in-memory data store. IMO it's much more useful to just consider which mode of code organization increases readability and maintainability. Those are things you can actually describe and examine.