One way to spot a poor thinker is to see how many of their decisions boomerang back to them. If poor thinkers make poor decisions it stands to reason those decisions will eventually create more problems. More problems consume more time, leaving them even less time to think about new problems. The time used to correct poor thinking comes from the time that could be used for good thinking. Good thinkers understand a simple truth: you can’t make good decisions without good thinking and good thinking requires time. Good thinking is expensive but poor thinking costs a fortune.