My guess at the one thing: Aim at the use, not the truth. Think about what it's supposed to do. This is helpful at all scales, from code snippet to a whole bus

My guess at the one thing: Aim at the use, not the truth. Think about what it's supposed to do. This is helpful at all scales, from code snippet to a whole business. It's similar to finding the right question, before finding the right answer. Sometimes, it enables you to simplify dramatically.