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Mistake Proofing
Mistake proofing takes 5 common forms: preventing, pausing, notifying, minimizing, and guiding. Preventing uses design to make mistakes impossible through shapes, sizes or functions. Pausing adds hurdles to force stopping and reconsidering. Notifying informs of potential mistakes without stopping. Minimizing controls damage if a mistake occurs. Guiding suggests but does not stop, as with reminders. The document explores examples like gas nozzle sizes, car warnings, and hygiene signs.
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Mistake Proofing
- 1. Mistake Proofing an explorationof 5 forms with examples by Tom Curtis
- 2. • Created July2010 by Tom Curtis • All Pictures take by Author • Blog: www.onimproving.blogspot.com • Other Presentations: Onimproving on www.slideshare.net
- 3. An Introduction Mistake Proofingis all around us whether we recognize it or not. The purpose of this document is to look at some of the common ways it can be deployed and examples to help begin to recognize and start to employ in our spheres. This does not seek to be the last word, but hopefully a door to seeing mistake proofing in the world around us. --Tom Curtis 2010
- 4. Forms of MistakeProofing Preventing Pausing Notifying Minimizing Guiding May overlap or be used in combination
- 5. Preventing In somecases a mistake can be prevented. This may include use of shape or size or function. Classic examples in this space include the different size of the diesel and unleaded gas nozzles, or something that can only fit in one way. This is sometimes called poka-yoke. This form is most often associated as mistake proofing.
- 6. Different Size Hook Preventing
- 7. Inside Trunk Release Preventing
- 8. Protects Against Balls Preventing
- 9. Key Required to Adjust Preventing
- 10. Newspapers andno Bottles Preventing
- 11. No Lost Tickets Preventing
- 12. Helps Fight Unhappiness Preventing
- 13. Automatically Locks Preventing
- 14. No Hook Hanger Preventing
- 15. Pausing Pausing or delayingtechniques do not fully prevent a mistake occurring, but rather force an individual or group to stop and overcome some hurdle to proceed. An example is a computer program that asks “Are you sure?” before executing a desired command. The goal is that in being forced to stop a mistake may be prevented.
- 16. 2 Step Process Pausing
- 17. Review Before BallotCast Pausing
- 18. Difficult to put in Pocket Pausing
- 19. Must Push Twice Pausing
- 20. Must Push both Buttons Pausing
- 21. Notifying Innotifying the system or process lets us know that something needs to be addressed, but does not prevent us from continuing, like in preventing or pausing forms. For this type of proofing think of the gas light in most cars. It lets us know that a mistake will eventually be made (running out of gas), but it is up to us as to whether we heed the notice or not.
- 22. Gas Needed Soon Notifying
- 23. Entering Oncoming Lane Notifying
- 24. Helps Proper Setup Notifying
- 25. Stay Out Notifying
- 26. Minimizing In minimizing itis realized that there may be a mistake made, but that the damage can be controlled. Think of a machine that shuts down when it gets too hot. The machine does get hot, but does not allow the motor to burn out. There is some damage done, but the greater damage is minimized.
- 27. Triggers Turn Off Minimizing
- 28. Eventually Self Turns Off Minimizing
- 29. Less Likely tobe left on Minimizing
- 30. Less Splashing Minimizing
- 31. Guiding Guiding or suggesting is similar to notifying, in that it does not stop the process and is a message from the process. It differs in that there is not a mistake that will happen if disregarded. An example is the please wash your hand signs for employees that you often see in public restrooms. We are protected if we heed, but are not punished automatically if we do not.
- 32. Friendly Restroom Reminder Guiding
- 33. Gentle Nudge Guiding
- 34. Warning of Terrain Ahead Guiding
- 35. Reducing Lost Cars Guiding
- 36. Request for Help Guiding
- 37. Can be seen inCase of Fire Guiding
- 38. Gentle Nudge Before Fueling Guiding
- 39. Reducing Injuries Guiding
- 40. Driving Tip Guiding
- 41. Strong Suggestion Guiding
- 42. Cleaning between Uses Guiding
- 43. Request to Refrain Guiding