RHY.2:1 - Problem frame
Use this when a score, count, waveform, movement trace or list of attacks leaves out something needed to explain, reproduce or change the rhythm. Start with the activity or material and a question: where a player can enter, what a partner must recognize, how two versions differ, or which feature an analysis must preserve.
The first useful result identifies the changing things and relations needed for that question. It may be an annotated recording, a demonstration with an explanation, or a small diagram. A complete notation or mathematical model is not needed for every use.