Many purveyors of root cause analysis believe the process is so complicated that you should use several methods for each problem or select one based on which type of problem you are experiencing. We've found the reason some people think this way, is that they don't understand the cause-and-effect principles. To quote Alert Einstein: "If you can't say it simply, you probably don't understand it."
In order to compare the many problem solving tools and methods, we created six criteria that define what we believe are the essential qualities required to ensure we find effective solutions. One point is scored for each criteria that is met and Limited is scored as 0.5 points. Details of each tool or method are provided in the links on the left side of this page.