This is one of those fundamental things they should just make mandatory in grade school. I constantly find myself explaining this to people I work with - and e

This is one of those fundamental things they should just make mandatory in grade school. I constantly find myself explaining this to people I work with - and even though it's kind of intuitive ("penny wise, pound foolish", "straining gnats to swallow camels"), it helps to have a formal concept like this to hang the concept on.