Long Context Is Not Memory
Why Bigger Windows Don't Remember You
A book by Alpesh Nakrani
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- Pages
- 136
- Chapters
- 14
- Format
- PDF · 26.5 MB
What's in the book
A bigger context window feels like a memory upgrade and is not one. This deep dive separates three things people conflate (context, retrieval, and state) and shows what each can and cannot be asked to do in a system that has to remember across sessions.
Stuffing the window is a tactic, not an architecture. What retrieval, state, and context each owe a serious system.
Table of contents
PDF page- FMFront Matter: Long Context Is Not Memory—
- INTIntroduction: The Sentence in the Middle14
- 01The Million-Token Mirage20
- 02Six Words That Are Not Synonyms27
- 03The Desk and the Archive35
- 04Tokens, Windows, and the Shape of Attention42
- 05Lost in the Middle49
- 06Why Passing Needle-in-a-Haystack Is Not Enough56
- 07The Operational Bill: Cost, Latency, Caching, and Pollution63
- 08A Working Taxonomy of Memory71
- 09The Memory Write Gate78
- 10Reading Memory: Recency, Relevance, and Policy86
- 11The Context Assembler94
- 12Conflicts, Recency, and Knowing Which Tool to Reach For102
- 13Measuring What the System Actually Remembers110
- 14Operating Memory in Production117
- AAppendix A: Back Matter125
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