In performing a pre-determined score with unpredictable dancing a performer can diverge to such an extend that it produces a divergant strand which maybe is not, or is not perceived as productive to the body the score has the intention of aspiring towards. The divergent strand which is not producing the pre- described future but at the same time the (unwritten and unuttered) rules of almost any score of any performance dictates that this is not stated explicitly during performance. The divergent strand is accepted as part of the forecasted future/present. Not only because there can not be any mistakes, everything that is produced belongs, but also because it would break the contract of collectivity where the performers have suspended their authorship. If one performer unilaterely claims that there was a mistake she takes on the role of the author.