Error proofing (aka “poka yoke” or mistake proofing) is such a powerful Lean method. Some people, unfortunately, think that Lean is only about speed or efficiency or cost. Going back to   Toyota, the two pillars of TPS are Just in Time AND “Jidoka” (as shown in this diagram from the excellent Gemba Panta Rei blog). Jidoka is a key quality methodology, as described on the Toyota website. I recently stayed at a hotel where … Continue reading Error Proofing the Hotel TV