Most of you have heard about the 80-20 rule. It's called the Pareto principle. The Pareto principle states that, for many events, roughly 80% of the effects come from 20% of the causes. In this episode, Dr J discusses the 40-70 rule. He talks about how successful people don't try to perfect programs or products before they launch. Most successful people get to the 40%-70% before they launch and then improve as they go. Dr J provides real-world examples of this principle in play.