MENTAL MODEL · M5954

Context Window

Learn & MetacognitionHigh supportCognitive Science

Included

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

The maximum length of text that a model can 'see' and 'remember' in a single processing pass. Information beyond the window is truncated or forgotten. Scaffolding role: the bandwidth of working memory. Human working memory also has a context window (approximately 7±2 units). When the complexity of the problem you are handling exceeds this window, you become less capable. The solution is to use 'external storage' (writing things down) or 'information compression' (abstraction) to fit information into the window.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

The bandwidth of working memory. Human working memory also has a context window (approximately 7±2 units). When the complexity of the problem you are handling exceeds this window, you become less capable. The solution is to use 'external storage' (writing things down) or 'information compression' (abstraction) to fit information into the window.

anchor

Anchor fast decisions

Any information processing system is limited by 'immediate accessible capacity': what exceeds the limit is invisible or must be compressed. For LLMs, the window is the token limit; for humans, working memory is about 7±2 chunks. The coping strategies are consistent—use external storage to expand (notes/documents) or use abstraction to compress (outlines/models) to reduce information density, ensuring key content falls within the window.

MINIMUM ACTION

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Practice this model in one real situation:

Estimate the window: clarify the capacity limit of the current system/self.
Externalize: put infrequently used information outside (documents, databases, memos).
Compress: abstract details into chunks/summaries to reduce occupancy.
Retrieve: fetch details when needed, rather than keeping everything resident.
Verify: ensure key information stays within the window to avoid truncation and misjudgment.

Check to track your progress (stored locally)

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Source support: Explicit

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