So who did arrive at the number seven and codify the 7 types of waste? My guess is the managers at Toyota who in 1973 wrote down the Toyota Production System ideas and philosophy that was in the air. Perhaps on his next trip to...
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So who did arrive at the number seven and codify the 7 types of waste? My guess is the managers at Toyota who in 1973 wrote down the Toyota Production System ideas and philosophy that was in the air. Perhaps on his next trip to Japan this summer the Green Hornet* (a.k.a. Art Smalley) can find out more about who actually coined the 7 types of waste if it was not Taiichi Ohno. Bonus Section: 5S Contains 25% More S than You Need While we’re shattering myths of Lean manufacturing… do you think there are actually 5S in the Toyota Production System? There aren’t. There are 4S, the first four. Who needs self-discipline if you do the first four properly? In some smart Japanese companies I have seen 3S, where they drop seiketsu which is literally “cleanliness” as in “spic and span” or “wash your hands with soap”. Who needs that if you Sweep properly. Originally 5S was seiri seiton which means “tidy up the place”. But 2S was too simple to make a book that sells. The real reason we have 5S in the Lean manufacturing lexicon instead of 4S is that Hiroyuki Hirano wrote a book on 5S that was translated into English. Had a Toyota person written about workplace organization we would be calling it 4S. Just because it says so in a book doesn’t mean it’s the truth. Kaizen. Read about it, think about it but most important, do it. *For those of you who are not familiar with the Green Hornet, he is an American comic book hero and crime-fighting newspaper owner.
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