The method

Six stages.
One justified commitment.

DECODE is deliberately linear. Each stage creates the conditions required for the next. Detailed execution begins only after closure.

Understanding · stages 01–04D01E02C03O04D05E06Commitment & closure · stages 05–06
01D

Define the Improvement Intent

Why is change being considered?

Explore stage →
02E

Explore the System as It Exists

What system actually exists?

Explore stage →
03C

Clarify Embedded Decisions

Which past decisions shaped the present system?

Explore stage →
04O

Outline Change Boundaries

What must not be crossed?

Explore stage →
05D

Decide the Improvement Path

What level of commitment is justified?

Explore stage →
06E

Establish Closure

How will the decision remain explainable?

Explore stage →

The only three legitimate outcomes

A decision must close as one of three paths.

01 / Within boundaries

Improve

Change the current system without crossing its defined boundaries.

02 / Beyond boundaries

Redesign

Create a different system because justified change exceeds current boundaries.

03 / Change not justified

Preserve

Maintain the current state deliberately, with explicit reasoning and revisit conditions.

Pilots, experiments, and implementation plans are not additional outcomes. They are downstream tactics after the decision is closed.