Reversible Door Decision Test
Act sooner when a wrong choice can be safely undone
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 5
- Confidence
- 95%
The Reversible Door Decision Test asks one practical question: if this choice is wrong, can you go back? Williamson applies it to high performers considering leaving a familiar job to try another path. If the former employer, industry, or comparable role would plausibly remain available, the decision is closer to an experiment than a permanent leap. Verify that return path rather than assuming it, bound the downside in time and resources, and act with a lower certainty threshold than an irreversible choice would require. The framework responds to choice overload and projected regret: more options can make people demand impossible certainty. Reversibility does not make every risk wise, but it changes how much analysis is proportionate before testing the alternative in reality.
Origin
Extracted from The Diary of a CEO
Core principles
- 01Reversible and irreversible decisions deserve different confidence thresholds
- 02Projected regret can create paralysis when options are abundant
- 03A recoverable mistake is often better than indefinite analysis
- 04Real-world constraints still determine whether the return path is credible
How to run it
- 1
Define the feared mistake
State what you think could go wrong and what you believe you would lose by trying.
Watch out Do not bundle several separate risks into one vague fear.
- 2
Test reversibility
Ask whether you could return to the current job, market, home, or routine if the experiment failed.
Pro tip Distinguish inconvenience from genuine irreversibility.
- 3
Verify the return path
Use your track record, market demand, direct conversations, or other evidence to check that going back is realistic.
Pro tip Confirm assumptions before resigning or spending.
Watch out A hypothetical return path is not automatically a reliable one.
- 4
Bound the experiment
Set limits on time, cash, health, and obligations so a failed trial remains recoverable.
Pro tip Choose the smallest test that answers the important uncertainty.
- 5
Act and review
Run the experiment, then decide from real evidence whether to continue, return, or revise the path.
Watch out Do not turn a reversible trial into an irreversible commitment without a fresh review.
In the wild
Williamson asks whether a high-performing employee who leaves a bank to pursue a dream could be welcomed back if wrong. If the person has a strong track record and comparable employers would hire them, the experiment may be more reversible than fear suggests.
→ The employee can evaluate the opportunity as a bounded trial rather than demanding near-perfect certainty.
Common mistakes
Assuming every door reopens
Reversibility must be supported by a credible return path, not merely desired.
Demanding irreversible certainty
Waiting for 95% confidence can block useful experiments whose downside is limited and recoverable.
Is it for you?
Best for
Career, project, and lifestyle choices where the current position can realistically be regained.
Not ideal for
Choices involving irreversible harm, major unbounded loss, or a return path that has not been verified.
From the transcript
“If you're wrong, could you go back?”
“If you're wrong about this dream you have, would you be welcomed back to your current life?”
From the episode
Chris Williamson: If You Don't Fix This Now, 2026 Is Already Over!