MDPE.1:2.1 - Select the subject and scale

Start from the decision named by MDPE.8 or from an equally clear direct project question. Choose one primary subject from the table above. Name any linked subjects and the relations through which their results will be used.

For example, a festival project may change an event-production System while also testing whether its curation and teaching relations support a style-development line. The festival is not thereby the style, and one edition is not the whole event series.

When the primary or linked subject is an engineered System, select the Systems Engineering result that is actually missing:

Missing engineering result	Direct Systems Engineering pattern
Which actual or intended System is the project System-of-Interest, and when that focus must reopen	`SYSE.1 — Choose and Reopen the Project System-of-Interest`
Which linked use and System concepts make the intended value and boundary testable	`SYSE.2 — Develop Linked Use and System Concepts`
Which functional organization, bearers, and interfaces remain viable alternatives	`SYSE.5 — Develop an Engineered System's Functional Organization and Bearer Alternatives`
Which architecture is selected and what evidence reopens it	`SYSE.6 — Decide and Reopen the Engineering Architecture`
Which recursive realization arrangement can create, integrate, qualify, operate, and change the System	`SYSE.3 — Plan the Next System-Realization Action (Recursive Realization Network)`
Which assurance claim, evidence, uncertainty, and return must accompany the result	`SYSE.4 — Prepare Engineering Assurance and Return Evidence`

These are conditional exits, not a mandatory sequence. MDPE.1 specializes their use by stating which Music-or-Dance Work, style distinction, performance relation, and cultural consequence the engineered System is meant to enable. Use Method Engineering when the project subject is a Method or Method family rather than the engineered System or performance result.