MDPE.18:0 - Use This When

Use this pattern when a creation, reconstruction, attribution, teaching, transmission, restoration, retirement, or practice-development decision depends on what earlier musicians, dancers, teachers, organizers, tools, or communities did—and the surviving sources do not give one ready answer.

Typical costly failures are:

• a video, score, notation, playlist, event page, or software repository is treated as the reusable Method;
• an archived artifact is treated as proof that a living practice continues;
• a founder or institution’s story is repeated as the complete lineage;
• a shared or changed label stands in for continuity or discontinuity of material, Method, performance, or population;
• visible movement or sounding result survives while partner pressure, bodily effort, instrumental technique, correction, or teaching practice disappears;
• the volume of academic, press, official, or platform material is mistaken for prevalence in actual Music or Dance Work; or
• research grows without identifying the decision it can change.

The practical question is:

Which named claims do the available sources support for this decision, over what extent and uncertainty; which materially different explanations remain live; and which inferences are blocked?

A compact teaching unfolding is:

1. name the decision, subject, population, place, period, and intended use;
2. identify the world-side Work, Methods, people, artifacts, and events at issue before interpreting their records;
3. build one source-to-claim table with limits;
4. compare lineage alternatives only where evidence leaves more than one live;
5. identify embodied, performative, technical, and present-use gaps; and
6. return the evidence that the decision may use and the limits of that use.

Source discovery, comparison, and gap testing can loop. The list is not a historical lifecycle or required research schedule.

Use direct oral-history, historical, ethnographic, ethnomusicological, Dance-documentation, archive, process-mining, phylogenetic, network, or preservation Methods when the inquiry requires that specialist Work. MDPE.18 integrates their results for one Music-or-Dance engineering decision; it does not replace specialist fieldwork or formal inference.

Do not use this pattern merely to manage an archive (C.18), test receiving enactment (MDPE.17), choose changed-condition use (MDPE.6), or decide whether a variant is still reproducible (MDPE.19). This evidence can inform those Methods but does not perform their Work.