Business Core · Operational Systems · Module

Standards and quality

What good output looks like, defined precisely enough that two people would agree. Without it, quality is a matter of who checked.

The idea

How it works

A standard exists when two people assessing the same output reach the same verdict. Anything less is a preference, and it will be applied inconsistently no matter how sincerely it is held.

The other principle is that quality is cheaper built in than inspected out. A defect caught at its source costs a fraction of one caught downstream, and the ratio grows the further it travels.

Working with it

In practice

  1. 01

    Write standards as observable conditions

    Things that can be checked rather than judged. “Loads in under two seconds” rather than “fast”.

  2. 02

    Test the standard on two people

    Give the same output to two assessors. Disagreement means the standard is not yet written.

  3. 03

    Catch defects at source

    Build the check into the step that produces the work rather than at the end of the line.

  4. 04

    Record defects by origin

    Where a defect was created matters more than where it was found. Only the first is actionable.

One level in

The components of standards and quality

A component is something that exists afterwards which did not exist before — a deliverable or a mechanism, not an intention.

  1. The standard

    What good output looks like, in observable terms.

    Learn
  2. The check points

    Where quality is verified, as close to the source as possible.

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  3. The defect record

    Defects logged by origin rather than by discovery point.

    Learn

Give the same output to two assessors. If they disagree, the standard is a preference that has not been written yet.