The most impressive thing about this improvement in performance was that it did not come from a major process change or an advance in technology. Instead, it came through a leadership principle that has been around for ages: Simple.
You have to BE VIGILANT. You have to be ON GUARD. You have to HOLD THE LINE on the seemingly insignificant little things— things that shouldn’t matter—but that do.
If the plan is simple enough, everyone understands it, which means each person can rapidly adjust and modify what he or she is doing. If the plan is too complex, the team can’t make rapid adjustments to it, because there is no baseline understanding of it.
