Dual node
Hypothesis The calibration case the theory requires. Assignments on record are predictions until measured.
Source: Style sheet v22 §1.2
Definition (canon)
Sensor and actuator at once; steepness set by the monitoring aperture of the enclosing membrane, so it can be operated in either regime. The calibration case.
On record (as assignments): CPT1 (Substrate §4); the membership and standing boundary (Legibility §6); the anal sphincter complex (Dropzone §2–§3).
In plain words
A node that both reads and acts, and whose behaviour can be tuned between graded and all-or-nothing by how finely its surroundings let it resolve what arrives.
It is not
- "A tuning parameter". The style sheet retires that phrasing (D9).
- The membrane. The membrane sets the aperture. The node has the steepness.
What would defeat it
- Canon. A calibration case needs a geometry knob that can be swept while the response is watched. A node with no such knob cannot hold this role.
- Follows from the definition. A node typed dual whose steepness does not move when its aperture is changed.