コンセプトは ”どうしたら面白くなるか?” Profit by Quality/品質でもうけなさいin English drawn & written by Isao Hirasawa
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2.2 Is quality "goodness"? Profit by Quality《Contents》
 Prologue
T.Way of thinking quality and cost
So, how is the "goodness" of an article or service measured and evaluated?
Please consider...

Usually...
1. Company without problem cannot profit
2. Good or bad quality is known at cost
2.1 Let’s think over the meaning of quality
2.2 Is quality "goodness"?
2.3 If quality is good, productivity is also high.
2.4 Quality is not visible by the number of cases.
2.5 Grasp quality with cost.
2.6 Level of quality control

3. What is quality assurance?
U.Way of solution quality problem
4. Make problem solving efficient.
5. Shares a problem by visualization
6. Dig into, and get clue of solution
7. Don't take unprofitable measure
V.Consultation example of quality problem
Don't you think that it is strange?
Why does measuring "goodness" have many indices which sway in the minus direction?

Why is it fraction defective and isn’t it fraction non-defective?


The reason is easy.


It’s because quality is the “badness” of an article or service.

…and usually half of members are discouraged to take the lecture at this point.
8. Consultation example of quality problem
9. Necessary way of thinking to raise level

 Epilogue
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備忘録めもらんだむ・・・工事中で歯抜け状態ですが、宜しければどうぞご覧ください。
改善提案名人に挑戦! Dの問題…デリバリー/生産管理の問題について考えてみましょう
…but lecture must be continued.
 Yes. That’s right.

 Well, what kind of thing is really
 "quality is goodness" pointed out?

Now, I make relation between fraction defective and cost into a graph.
  The more there are many defects,
  the more the expense of repair or
  abandonment increases,
  so it becomes an upward straight line.



  On the other hand,
  if expense is spent on inspections or
  settlement of defectives,
  defects will decrease in number.
  Therefore, it becomes a graph of
  an inverse proportion.

The curve which combined these two graphs shows the relation between fraction defective and cost.
If fraction defective is low, it will usually be supposed that quality is good.
However,
if fraction defective becomes low too much,
it’s not become to say so.
It’s also called "superfluous quality",
but if too high-cost, even if it’s zero defects, it will not be said that quality is good.

Interestingly, when we evaluate quality,
we think on the clear standard of cost unconsciously.
That is, good quality means being low-cost.
Let's arrange the talk so far.
The quality improvement is the same meaning as a cost cut.

You ought to have made it out that it’s only an excuse that you cannot advance productivity improvement because of being busy with settlement of defectives.
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