Composition Fallacy: Logical Fallacy – Absurdly Useful Resources
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Logical fallacy

Composition Fallacy

Assuming what is true of the parts is true of the whole.

Classic tell: Every player is excellent, so the team must be excellent.

Back to the guide

Further explanation

What is happening underneath?

Assuming what is true of the parts is true of the whole.

What is true of parts is assumed true of the whole. Good ingredients do not guarantee a good cake, team, policy, or marriage.

01

What it sounds like

  • Every player is excellent, so the team must be excellent.
  • "Every person on the committee is smart, so the committee will make smart decisions." Meetings have entered the chat.
02

How to tell

  • The argument jumps from individual qualities to system-level outcomes.
03

Why people use it

  • It ignores interaction effects, coordination costs, incentives, and context.
04

How to combat it

  • Say: "How do the parts work together, and what happens at the system level?"

Manipulation watch

How this gets used on people.

  • Companies sell bundles by praising each feature as if feature quality automatically creates whole-product value.