Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M0327

TAM-SAM-SOM

TAM-SAM-SOM
TechnicalHigh supportArtificial Intelligence
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

A three-layer onion model for assessing market size. - TAM (Total Addressable Market): the total potential market (all possible buyers globally). - SAM (Serviceable Available Market): the market that can be served (covered by your channels/technology). - SOM (Serviceable Obtainable Market): the share you can actually capture after considering competition.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Debubbling: prevent entrepreneurs from using illusory TAM like 'China has 1.4 billion people, each gives me 1 yuan'.

anchor

Anchor fast decisions

Peel the market size like a three-layer onion: TAM (total potential, everyone), SAM (serviceable, limited by channels/technology), SOM (obtainable, after competition). The inner layers are more realistic, preventing storytelling with an illusory big picture.

MINIMUM ACTION

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Practice this model in one real situation:

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Source support: Explicit

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