What Is J-Space?

This defines the internal 'workspace' concept used in the series — a small set of internal patterns a model uses to hold and manipulate concepts while thinking. It is not the model's final output or a stored memory.

How it works

1. 1Definition: a small set of internal patterns, each tied to a concept or word.
2. 2These patterns light up when the model is thinking about a concept.
3. 3It is not the final output, not the chain of thought, and not long-term memory.
4. 4Many signals inside the model are narrowed to a few active concepts used for reasoning.
5. 5Those concepts guide planning and decisions before the answer.

Key points

• It's reportable, controllable and used for reasoning.
• It's a broadcast hub — strongly connected to the rest of the model.
• It's flexible — one concept can be reused for many tasks.
• It's where a model 'thinks', distinct from where it writes (chain of thought) and shows (output).

Why it matters

Framing internal reasoning as a small, inspectable workspace helps explain how researchers study and steer what a model is 'thinking' before it answers.

Frequently asked questions

Is this the same as memory?

No — it's internal reasoning activity in the moment, not stored long-term memory.

Is it the chain of thought?

No — chain of thought is written out; this workspace is the hidden internal thinking behind it.