Movement as observable behavior
The book's organizing choice is to treat movement as behavior that can be observed and measured, with internal processes inferred from it rather than taken for granted. This keeps the discussion tied to what performers actually do across changes in task and setting. The behavioral stance also explains why the text keeps returning to the separation between how a skill looks today and what has been retained.
- Movement is treated as measurable behavior
- Internal processes are inferred from performance
- The behavioral framing governs later questions
