Brad Appeltion summarizes The Theory of Constraints (ToC), Lean manufacturing, and Agile software development with three words Friction, Flow, and Feedback.
- ToC is about removing friction,
- lean is about improving flow,
- and Agile is about getting better feedback sooner.
But all of these things actually describe Lean. The briliance of the Toyota Production System is that it tells you how to removE friction through the reduction of waste (motion, long cycle times, poor quality, etc), creating a clear flow of work through your system, and reducing the time between a customer asking for something and when it is delivered. And that helps to make the Feedback loop is as short as possible.