Cognitive Scaffold

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MENTAL MODEL · M1449

Tetrad of Media Effects

Tetrad of Media Effects
TechnicalHigh supportEcology
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Analyze the effects of any medium or technology through four dimensions: 1. What does it enhance? 2. What does it make obsolete? 3. What does it retrieve (that was previously obsolete)? 4. What does it reverse into when overused?

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Comprehensive technology assessment. When introducing new technology (e.g., AI), interrogate it with these four questions to see overlooked side effects and potential retro trends (e.g., AI revives oral communication).

anchor

Anchor fast decisions

Proposed by McLuhan and Powers, using four questions to assess technology: enhance/obsolete/retrieve/reverse. The four items form a dynamic tension, revealing the chain effects after technology adoption and overuse, especially 'reverse' pointing to the self-negation of excessive advantage.

MINIMUM ACTION

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Source support: Explicit

  • link
    en.wikipedia.orghttps://en.wikipedia.org/wiki/Tetrad_of_media_effectsZH · Explicit
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