Watch for one-way door creep
Recognize when a series of small reversible decisions has created an irreversible position.
Key takeaways
- What it is: Recognize when a series of small reversible decisions has created an irreversible position.
- Why it works: Individual decisions that are each two-way can cumulatively create a one-way door: ten small commitments that each seemed reversible may leave you in a position where reversing any one requires reversing all the others simultaneously. Sunk cost reasoning and consistency pressure make accumulated two-way doors feel like one-way ones over time.
- Evidence: Backed by observational / correlational evidence.
- Avoid: Concluding that because each step was reversible, the whole accumulated position must still be — without actually checking what reversal would now require.
Why it works
Individual decisions that are each two-way can cumulatively create a one-way door: ten small commitments that each seemed reversible may leave you in a position where reversing any one requires reversing all the others simultaneously. Sunk cost reasoning and consistency pressure make accumulated two-way doors feel like one-way ones over time.
How to do it
- 1Periodically review a sequence of commitments and ask whether the accumulated position is still reversible.
- 2Identify whether the cost of reversal has risen substantially since the first step.
- 3If you detect creep, treat the accumulated position as a one-way door requiring deliberate review.
- 4Distinguish sunk cost from genuine irreversibility — the past cost does not change what is reversible now.
What the evidence says
ObservationalSunk cost fallacy and escalation of commitment are well-documented phenomena showing people overweight prior investments when deciding whether to continue a course of action. Recognizing accumulated irreversibility is a specific application of this literature.
Honest caveat: Irreversibility is sometimes correctly perceived even when incremental steps look reversible; the practice is to check explicitly rather than assume.
- — Staw (1976), escalation of commitment to a failing course of action, Organizational Behavior and Human Performance
Common mistake
Concluding that because each step was reversible, the whole accumulated position must still be — without actually checking what reversal would now require.
IX Coach helps you review a series of past decisions to see whether your current position is more constrained than any individual step suggested.
Practice this with IX Coach →