Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M1688

Forward Compatibility

Forward Compatibility
SystemsHigh supportSystems Theory
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

The system is designed with future extensibility in mind, so that older versions can receive, process, or at least not crash due to new data formats (although they may not be able to use new features). It is more difficult than backward compatibility (newer versions compatible with older ones).

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Leave interfaces for the future. When formulating rules or protocols, reserve some 'reserved fields' or 'extension bits'. You don't know what they are for now, but they can save you in the future, avoiding the need to overhaul the entire system for a small upgrade.

anchor

Anchor fast decisions

Forward compatibility means that new systems can accept/process data or interfaces produced by older versions, protecting existing assets.

MINIMUM ACTION

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Practice this model in one real situation:

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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E5%90%91%E5%89%8D%E5%85%BC%E5%AE%B9ZH · Explicit
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