Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M8087

One-Way Door Principle

One-Way Door Principle
DecidemediumDecision Science
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Updated 2026-08-10

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INTRODUCTION

English translation pending.

CORE DEFINITION

A principle that sorts decisions by reversibility. One-way doors are irreversible or extremely costly to reverse, so they demand caution and thorough analysis. Two-way doors can be reversed or amended, so they can be decided quickly and adjusted while moving. Many people are equally cautious about every decision and waste time, or equally careless and create irreversible errors. One-way logic, single-ticket logic, and check-valve effects are the same idea.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Reversibility sort: classify each pending decision as a one-way or two-way door. - Careful gate: for one-way doors, set thresholds and analyze before committing. - Fast iterate: for two-way doors, decide quickly and adjust as evidence arrives.

anchor

Anchor fast decisions

Classifying decisions by reversibility allocates effort properly. One-way doors, which are irreversible or costly to reverse, need slow, cautious, well-argued analysis. Two-way doors, which are reversible, can be decided fast, tested, and amended in flight, avoiding the waste and disasters that come from treating both kinds alike.

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Jeff_BezosZH · Explicit
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