Given the title of this post, this is NOT advice related to driving and traffic (or other transportation situations where red lights mean “stop”). I’m writing about how people react to “red” data points in their workplace metrics. As the practice of “Lean Daily Management” has spread–in factories, hospitals, and beyond–I frequently encounter a common “rule of thumb” that has, I’m sorry to say, NO valid basis when it comes to statistics. Sorry, not sorry. … Continue reading Stop Reacting to Red Light Metrics: Why ‘Two Reds in a Row’ Is a Misleading Rule of Thumb