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The Context Window

  1. 01The Context Window
  2. 02Memory card
  3. 03What the model sees
  4. 04Fill it up
  5. 05What gets cut
  6. 06No memory between chats
  7. 07Take a breath
  8. 08Reinforce your understanding
  9. 09Question: What fits in the window
  10. 10Question: The illusion of memory
  11. 11Quiz: answer
  12. 12The window is the world
  13. 13Want to go deeper?
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No memory between chats

So far we have watched the board lose its oldest notes. But there is a harder edge than that. When you close a conversation and open a new one, you do not get the same board with a few notes missing. You get a brand new, blank board. Everything from before is gone, all at once.

This is the part that surprises people, because within a single chat the model can feel like it is getting to know you. It picks up a detail you mentioned ten messages back and uses it. That feels like memory. It is not. It is just the model rereading the whole board, where that detail is still written down. Start a fresh chat and the board is wiped clean. It has no idea who you are.

You may object: "but the assistant I use does remember me across chats." Sometimes it seems to, and here is what is really happening. Some tools bolt a memory system onto the outside of the model: after each chat they save a short note about you, and at the start of the next chat they quietly copy that note onto the new board before you say a word. The continuity is real, but the model is not the thing providing it. The app is, by writing onto the board for you. The model underneath still wakes up blank every time.

This is not a flaw to mourn. It tells you what these tools are naturally good at: a single piece of work with everything it needs in one place, one problem, one document, one extended back and forth. A relationship that deepens on its own over months is not something the model does by itself. It is something an app has to build around it.

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