Score
Write only what must hold, never the result; if two runs come out the same, rewrite.
Ono: “Draw an imaginary map.”
Seen in Yoko Ono, Map Piece, 1962, in Grapefruit, 1964
Try it on your work
Write instructions for making a version of the thing you're working on, precise enough that a stranger could follow them without you present. Stop when the instructions contain no decision only you could make, then hand them over or set them aside.
Write your next working hour as a set of numbered commands to yourself, before it starts, then follow them exactly. At the hour's end, underline the command you disobeyed first.
Reduce your project's method to instructions on one side of one sheet. Give it to someone else, or to yourself in a week, and let the performance differ from your intention. The differences are the finding, not the failure.
How it has been used
Write conditions, not outcomes: Yoko Ono's instruction pieces, Cardew's graphic scores. You decide what must hold; the performer decides everything else. The move forbids specifying the result: if two executions come out identical, you wrote instructions, not a score.
Where it leads
Grouped under Give me another way in