Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M0609

Back of the Napkin

Back of the Napkin
StructureHigh supportLogic
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

If you can't explain your idea clearly with a simple sketch on a napkin, you haven't thought it through yet.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Thought purification. Before making a polished PPT, force yourself to draw a rough sketch. Visualization instantly exposes logical flaws.

anchor

Anchor fast decisions

This method involves explaining an idea clearly with minimal hand-drawn sketches on a napkin. The core assumption is that 'if you can't express it with the simplest graphics, your thinking itself is not clear.' Visualization forces implicit structures to become explicit, and the topological relationships in the sketch immediately reveal logical breaks and redundancies, uncovering flaws earlier than text.

MINIMUM ACTION

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Practice this model in one real situation:

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Source support: Explicit

  • link
    baike.baidu.comhttps://baike.baidu.com/view/2512361.htmZH · Explicit
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