Phase space (possibility space)
One-liner: The abstract space of possible states a system can occupy; constraints sculpt which regions are open and likely.
In Juarrero’s usage
Constraints modify phase space (accessibility) and/or the probability distribution over states. Thinking in phase space lets causes work by reshaping possibilities, not only by impacts inside an unchanged space.
Not to confuse with
- Physical room volume only
- A literal map you must draw mathematically to use the idea
Everyday example
A chess position’s “possibility space” of legal moves is constrained by rules and piece geometry — long before any particular capture “pushes” another piece.
Related
Best local sources
- REPORT §2.2 · DiA ch. 9