Do Defects Really Matter?
Is 99.9% an acceptable tolerance for defects? Consider:
- Drinking water contaminated for 1 hour per month.
- 16,000 letters lost every day by the US Post Office.
- 2 accidents per month at O’Hare International Airport.
- 20,000 prescriptions in error each year.
- 50 babies dropped on the delivery room floor each hour.
- 22,000 checks drawn from the wrong account per hour.