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Episode 28
Four Methods of Mistake-Proofing
Choose a method appropriate to the situation and importance

This video is part 2 of 2 of the set:
Mistake-Proofing and Poka Yoke

Video Length:
19 min

Mistake-proofing opportunities are endless, yet we don’t usually pursue these opportunities until after a disaster or financial misfortune occurs.  Learn the best ways to mistake-proof, including poka yoke, and the strengths of each type of approach.


  • Mistake-proofing to solve problems
  • Mistake-proofing to prevent problems
  • Techniques for mistake-proofing and poka yoke
    • —TYPE I:   Prevention through contact
    • TYPE II:  Prevention through source detection 
    • TYPE III: Prevention of more than one defect 
    • TYPE IV:  Making it easy to do it right 

 Target Audience

  • Mid-management
  • Supervisors
  • Engineers
  • Technicians


"Strive not to be a success, but rather to be of value. "
– Albert Einstein