Timeboxed Decision Timer
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Common uses for a timeboxed decision timer
- Meeting decisions
- Reversible operational choices
- Stopping recurring debates
- Team decision hygiene
Timeboxing a decision means agreeing in advance how long the group will spend before someone decides. The amount of time a decision deserves depends mostly on whether it can be reversed — a distinction popularised as type 1 and type 2 decisions, or one-way and two-way doors.
Ten minutes suits a reversible decision with a few reasonable options. The failure this addresses is a group spending an hour on something they could have tried in a day and undone in an afternoon, which is a much more common organisational failure than deciding too fast.
One-way and two-way doors
A type 2 decision is a two-way door: if it turns out badly you walk back through it. Most decisions are like this, and they should be made quickly by whoever is closest to the work.
A type 1 decision is a one-way door — hard or impossible to reverse. Those genuinely deserve deliberation, consultation and time. The organisational failure is applying type 1 process to type 2 decisions, which makes everything slow without making anything better.
Name the decider before the discussion
A discussion with no named decider does not end; it recurs. Agreeing up front who decides if the group does not converge is what converts a conversation into a decision, and it is more important than the timebox itself.
It also improves the discussion. People argue more usefully when they know a decision is coming than when they suspect the conversation is the whole event.
Disagree and commit
When the timebox expires and the decider decides, the expectation is that everyone commits to the decision including those who argued against it. That commitment is what lets a team move fast without requiring consensus.
It only works if disagreement was genuinely heard first. Disagree-and-commit imposed on people who were never allowed to disagree is just compliance, and teams can tell the difference immediately.
Time a decision deserves, based mostly on how hard it is to reverse.
| Decision type | Reversible? | Timebox | Decided by |
|---|---|---|---|
| Routine operational | Easily | 2–5 min | Closest to the work |
| Type 2, two-way door | Yes, with effort | 10 min | Named decider |
| Significant but reversible | Yes, costly | 30–60 min | Named decider |
| Type 1, one-way door | No | Days to weeks | Escalated, deliberate |
| Recurring debate | — | Decide now | Name a decider |
- Applying type 1 process to type 2 decisions makes everything slow without making anything better.
- Disagree-and-commit only works if the disagreement was genuinely heard first. Otherwise it is compliance.
Sources
- The type 1 / type 2 decision distinction is a widely adopted management framing, popularised in corporate shareholder communications , TheTimerLab — accessed 2026-07-28