To attempt to write about the undocumentable event of performance is to invoke the rules of the written document and thereby alter the event itself. Just as quantum physics discovered that macro-instruments cannot measure microscopic particles without transforming those particles, so too must performance critics realise that the labour to write about performance (and thus to “preserve” it) is also a labour that fundamentally alters the event. 
There is no documentation of “That Place Beneath the Apple Tree is (Still) Reserved for You and Me”.
Whitworth Gallery. 4th July 2008.
 Phelan, P. (1993) Unmarked : the Politics of Performance London ; New York, Routledge. p148.