Good stuff. I will go one step further and suggest that focus is easy with the correct toolbox. As you know Ash, the late Dr. Eli Goldratt brought focus to the world of constraints. And the best implementations start with discovering the root cause of any lack of throughput. Your book Running Lean taught the world to [among other things] get out of the building ASAP and discover what really matters. Goldratt’s CRT (current reality tree) is the best way to discover exactly what matters. This focus-forcing tool is not part of any other methodology. Yes, it is based in part on root cause analysis and yet it is so much more. Exposing constraints is good. Focusing on the “one weakest link” is really the key.