Keep simultaneous Work separate from the decision unfolding

During the trial, the musician performs Music Work, eight pairs perform Dance Work, the organizer operates the event block, and two observers obtain decision-relevant indications. These Work occurrences overlap. They are not levels in a Method stack. The project account nevertheless has a first–then dependency: select the test, perform it, obtain observations, and only then choose the next investment. That dependency is a useful teaching and decision unfolding, not the architecture of the simultaneous Work.