A decision can be technically easy to reverse and still expose many customers, teams, or critical workflows before rollback.
Another decision can affect one team and still become expensive to undo after data, procedures, consumer expectations, and operating habits form around it.
One risk label hides this difference.
Use two dimensions instead: reversal cost and blast radius.
Start by writing the exact commitment. Do not classify a broad topic such as identity, platform, data, or AI. Name the capability, owner, consumer boundary, and part of the decision that becomes shared.
Then write two evidence statements.
The reversal statement explains what changing direction will require after adoption. Include consumer changes, data or state migration, contracts and controls, operating procedures, coexistence work, synchronized roadmaps, and the exit owner.
The blast-radius statement names who or what can inherit the consequence, how quickly failure becomes visible, who can stop further exposure, and whether rollback works before the full audience depends on the path.
Cross the statements to choose the operating mode.
Reversible and contained: run a bounded experiment.
Reversible and broad: constrain exposure, observe leading signals, and test rollback.
Durable and contained: document the commitment, owner, expected life, and replacement path.
Durable and broad: test the boundary, reduce the first rollout, compare credible alternatives, and preserve an exit.
The matrix should change the decision shape. Sending every quadrant through the same meeting and approval path adds ceremony without changing control.
Reclassify the decision as adoption changes. A new consumer class, customer-facing exposure, removal of the old path, or a point where several roadmaps must move together can increase the blast radius or reversal cost. A stable contract or coexistence path can reduce them.
If either evidence statement remains vague, do not compensate with a larger meeting. Shrink the first commitment or improve the boundary until a bounded rollout can produce the missing evidence.
Use the complete two-axis review: https://galstyan.am/reversibility-and-blast-radius-belong-in-the-same-review?utm_source=newsletter&utm_medium=email&utm_campaign=sts_2026_season_1&utm_content=nli_009_beehiiv_v1
Reply with one decision that looks reversible but has a broad consequence.