Waste Doesn’t Happen by Accident
In some situations, waste (activity that DOESN'T add value) is the result of something going wrong. For example, when a defect occurs, it starts a chain of waste activities: wait…
Hard or Soft?
"Be hard on the process, but soft on the operators." A Toyota saying quoted in Toyota Kata by Mike Rother (McGraw Hill, 2010) p. 141.