A core Lean concept is “error proofing.” We use physical devices or processes that make it difficult or impossible for errors to be made. For a great resource on error proofing, check out John Grout's Poka-Yoke page.
So let's go back in time… let's say it's early in the 20th century (the era of black and white photos). You have a problem with false alarms with fire boxes, people are pulling the alarm, which wastes resources of the fire department and creates all sorts of risks.
So can you error proof this? You could, maybe, but would you want to? You might get a good chuckle about this one “solution” that was designed (and never took root). The punchline is at the link below:
What are some obvious problems with this attempt at prevention?
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