HCE.Reference:4 - What changes when a teacher, learner, instrument or listener changes?
Replacing one participant can leave the target of capability change intact or alter the subject enough to require another Method. The following comparisons show which distinctions affect the choice.
| Changed participant or condition | What remains and what must be reconsidered |
|---|---|
| A teacher is replaced by an AI assistant | The human can remain the learner. HCD.7 addresses the needed provider, observation, feedback, human-check and fallback contributions. The assistant’s ability to discuss a movement does not supply physical observation or teaching competence it lacks. |
| The learner is replaced by a robot | A movement criterion may remain useful, but the changed holder needs its own sensing, controller, learning and actuator Methods. SOM’s first-person bodily distinctions do not construct that mechanism. The human and robotic results can be compared only on the criteria that actually apply to both. |
| An acoustic instrument is replaced by a sampler or DJ system | The performing configuration and its control demands change. MDPE.3 supplies the configuration question. HCD is needed only for a selected change in a person’s contribution; different motor demands can remove one learning need and create another. |
| A listener or other recipient changes | Recognizable or valued results may change even when the performer can still execute the material. The receiving judgement belongs to the artistic practice; a personal capability change is a separate question. |
| The learning mechanism changes | Comparable performance can be pursued through human practice and biological adaptation, statistical model training or controller redesign. Different mechanisms require different operations and evidence; a common capability description does not supply them. |
Ease of listening and ease of performing can therefore favor different variants. Changed instruments, learning conditions or participant populations can change later cultural selection. MDPE.20, especially section 3.4, distinguishes perceptual and reconstructive, bodily and robotic, capability-development, recognition and transmission mechanisms. That complete Method supplies the cultural-trajectory question. One person’s learning result alone does not establish the trajectory of a practice population.