Chapter 3

We found who made the mistake. Are we done?

Tìm ra người làm sai rồi, vậy đã xong chưa?

The chapter's question

What in how we organise the work caused this error?

Big idea

Stopping at the person who made the mistake stops one step short of the cause, and the error returns.

In this chapter

  1. Part 3.1

    Asking Why Repeatedly

    How many layers do I have to ask before I reach a fixable cause?

  2. Part 3.2

    Human Error or System Error

    When is a defect genuinely a person's fault?

  3. Part 3.3

    Working Conditions

    Do lighting, time pressure or tools play a part in this defect?

  4. Part 3.4

    The Third Time

    When the same defect happens three times, what must I change?

The reading for this chapter is inside Conan School

This chapter has 4 readings, with case stories and exercises. Chapter 1 of Errors and Rework is free to read right here.

Read in Conan School

Chapters of Errors and Rework

  1. 1.Does rework really cost only a little time?
  2. 2.Is the final check really the safest checkpoint?
  3. 3.We found who made the mistake. Are we done?
  4. 4.Will one more reminder make the mistake go away?
  5. 5.Does a team that reports few errors make few errors?