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Decide and Adapt

What changes because of what we learned?

Series identity. Learn in cycles. Move in a line. The product keeps moving forward, while understanding improves through repeated PDSA learning loops.

Use this guide to: turn learning into a product decision without losing nuance.

PDSA emphasis: Act.

Purpose

Decide and Adapt turns the Study step into action. The team chooses whether to adopt, adapt, abandon, scale, hold, or learn more. The decision should be clear enough to move work forward and humble enough to reflect the evidence limits.

When To Use It

  • After evidence has been studied and a choice is needed.
  • When teams are stuck in analysis even though a reversible next step is available.
  • When stakeholders disagree about what the evidence means for the roadmap.

Core Questions

  • What decision does this evidence support?
  • What should we adopt, adapt, abandon, or defer?
  • What changed in the product, plan, or team's theory?
  • What risk remains?
  • What should the next cycle learn?

Facilitation Pattern

  1. Restate the learning and evidence limits.
  2. Offer a small set of decision options.
  3. Decide based on decision impact, reversibility, and confidence.
  4. Record what changes and what does not change.
  5. Identify the next learning objective before closing.

Working Example

A team tests a self-service export flow. Study shows strong demand but repeated confusion around permissions. The decision is to adapt: keep the export direction, delay broad release, and make the next cycle about permission language and admin controls.

Common Traps

  • Treating any positive signal as permission to scale.
  • Abandoning a direction because the first slice was flawed.
  • Making a vague decision that cannot change the backlog.
  • Letting the decision erase evidence limits.

Outputs And Artifacts

  • Adopt, adapt, abandon, hold, or learn-more decision.
  • Change log for roadmap, scope, design, or operations.
  • Risks and confidence level.
  • Next-cycle candidate.
  • Stakeholder communication note.

PDSA Linkage

Act is where the cycle earns its keep. Learning becomes a changed theory, changed system, changed product slice, or changed next question.

Working Worksheet

  • State the decision in one sentence.
  • Connect it to the evidence.
  • Name confidence and remaining risk.
  • Update artifacts that guide future work.
  • Choose the next cycle or explicitly pause.

Lineage Notes

Direct lineage: Walter Shewhart's statistical view of process learning influenced W. Edwards Deming, and Deming made PDSA a disciplined loop for prediction, action, study, and adjustment. Complementary quality thinkers - Juran, Ishikawa, Feigenbaum, and Taguchi - sharpen the product team's attention to fitness for use, causes, total systems, and variation. Ackoff, Drucker, Ries, and Blank are useful adjacent thinkers for systems, management, and product discovery, but they are not presented here as the historical source of PDSA.

References