Case file
Time-Saving Bias
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The charge
Time-saving bias is misjudging how much time faster speed or throughput actually saves, usually by overvaluing gains at already high speeds and undervaluing gains at low speeds.
How it operates
People reason about speed linearly even though time changes nonlinearly as speed changes.
Logged incidents
- Incident 01
An ops team spends heavily shaving app latency from 0.8 to 0.7 seconds while ignoring a flow that could drop from 4 to 2 seconds.
- Incident 02
A driver speeds on the highway expecting huge time savings.
- Incident 03
An executive optimizes airport transfer speed instead of the longer security queue.
What to watch for
Ask: How many minutes does this change really save from start to finish?
Recommended action
Convert speed changes into actual time saved before prioritizing work.
Known associates
- Telescoping EffectTelescoping effect is misremembering when past events happened, often pulling distant events closer and…
- Rosy RetrospectionRosy retrospection is remembering past experiences as better than they felt at the time.
- Hindsight BiasHindsight bias is the tendency to feel, after an outcome is known, that it was predictable all along.
- Outcome BiasOutcome bias is judging the quality of a decision mainly by its result instead of by the information and…
- Moral LuckMoral luck is judging people differently for similar choices because luck changed the eventual outcome.
- DeclinismDeclinism is seeing the past as better than it was and the future as likely worse than it will be.
Source of record