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MENTAL MODEL · M2475

McLuhan's Tetrad of Media Effects

McLuhan's Tetrad of Media Effects
TechnicalHigh supportEcology
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Four dimensions for analyzing the impact of any new technology or medium: 1. Enhancement: What does it enhance? (e.g., mobile phones enhance connectivity) 2. Obsolescence: What does it make obsolete? (e.g., public phone booths) 3. Retrieval: What does it retrieve from the past? (e.g., social media retrieves tribal gossip) 4. Reversal: When pushed to its extreme, what does it become? (e.g., connectivity...

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Four dimensions for analyzing the impact of any new technology or medium: 1. Enhancement: What does it enhance? (e.g., mobile phones enhance connectivity) 2. Obsolescence: What does it make obsolete? (e.g., public phone booths) 3. Retrieval: What does it retrieve from the past? (e.g., social media retrieves tribal gossip) 4. Reversal: When pushed to its extreme, what does it become? (e.g., connectivity...

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Also known as McLuhan's Tetrad (or Four Laws of Media): it characterizes the impact of media on perception and society through four dimensions—enhancement, obsolescence, retrieval, and reversal—viewing media effects as a set of simultaneous dynamic forces.

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Source support: Explicit

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