MENTAL MODEL · M7140

Perfectly Fitting

StructuremediumLogic

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Updated 2026-08-10

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INTRODUCTION

English translation pending.

CORE DEFINITION

A Chinese image describing threads fitting perfectly through each eyelet, applied to an argument in which every part meshes precisely with the next. Its core proposition is that the strength of a chain of reasoning lies in each link being fully supported by its predecessor, so true premises and valid inferences leave an opponent no gap to attack. The qualifier is that formal tightness says nothing about the truth of the premises, so a tightly knit argument can still be wrong.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Step listing: write out every claim the argument makes, step by step in sequence. - Link test: check whether each step is supported by a true premise and a valid inference. - Assumption exposure: find the hidden premises and test them explicitly.

anchor

Anchor fast decisions

An argument fails at its weakest link, and an unstated assumption is the easiest link to leave weak because nobody examines it. Making each step and each hidden premise explicit turns a smooth-sounding case into a set of checkable claims, which is what exposes jumps and contradictions that fluent prose conceals.

MINIMUM ACTION

In progress 0/1

Practice this model in one real situation:

List every claim the argument makes in order. 2. Test whether each step rests on a true premise and valid reasoning. 3. Expose the hidden assumptions and examine them explicitly. 4. Ask others to attack the chain and look for gaps.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
zdic.nethttps://zdic.net/hans/%E4%B8%9D%E4%B8%9D%E5%85%A5%E6%89%A3ZH · Explicit
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