When I was eleven, an administrator named Fred closed every afternoon with the same line: anyone who was not helping to solve the problem was contributing to it. None of us had the faintest idea what he meant, and it took me decades to work it out. Most people can describe a problem accurately and name who is at fault, and then stop. The ones worth working with arrive with a possible fix, even a bad one.
This is the short version. The full lesson, with the story behind it, is in the book.
Take The Summer Camp MBA with you, or get the field notes by email while you work through the lessons here.