Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M4475

The Dragon in the Garage

The Dragon in the Garage
TechnicalmediumPhysics
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Updated 2026-08-08

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INTRODUCTION

English translation pending.

CORE DEFINITION

Presented by Carl Sagan in The Demon-Haunted World. Someone claims a dragon lives in the garage, but the dragon is invisible, incorporeal, and its fire gives off no heat. Each proposed test is met with a revision that explains away the result. Sagan's point is that when a claim is adjusted to survive every possible test, it no longer asserts anything, since it is compatible with every state of affairs.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Ask for a test: request a prediction that could come out against the claim - Spot the patch: notice when each counterexample is met with a new qualification rather than a revision - Withhold weight: refuse to treat an untestable claim as evidence for anything, however grand it sounds

anchor

Anchor fast decisions

A claim acquires content by ruling out possibilities. Each ad hoc revision restores compatibility with the evidence by removing one of those exclusions, so a claim patched indefinitely converges on a statement that excludes nothing. At that point it makes no prediction and cannot be supported or undermined, which is why it deserves no credence rather than modest credence.

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/The_Demon-Haunted_WorldZH · Explicit
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