MENTAL MODEL · M0881

Schelling Fence

DecidemediumGame Theory

Included

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Proposed by Scott Alexander. A Schelling point is the default meeting point for both parties; a Schelling fence is the default 'line not to be crossed' for both parties (or for your present and future selves). Once crossed, one slides toward the abyss (the actual defense line against the slippery slope).

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Setting bottom lines. Don't say 'I'll only drink a little.' 'A little' is vague and prone to sliding. Set a Schelling fence: 'Absolutely no drinking from Monday to Friday.' This is a clear, hard boundary that the brain can easily adhere to.

anchor

Anchor fast decisions

In a game, both parties (or the present and future self) need a default 'line not to be crossed'; otherwise, on a continuum, one loses a stopping point and slides toward a worse equilibrium; a hard boundary provides a focal point.

MINIMUM ACTION

In progress 0/3

Practice this model in one real situation:

Set clear hard boundaries where compromise and slippery slopes are likely
make public precommitments so that both you and others know the boundary
stop immediately upon triggering, and do not negotiate or blur the boundary.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
lesswrong.comhttps://www.lesswrong.com/posts/Kbm6QnJv9dgWsPHQP/schelling-fences-on-slippery-slopesZH · Explicit
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