[In migrating analog formats to newer formats, ed.] even when both the original media and the playback equipment are available and fully functional, the appearance of the imagery in a reconstituted installation may vary - not only from one iteration to another, but even over the course of a single presentation - and may or may not faithfully reflect the artist's vision.
Real, 2001, p. 213
With the artist's choice of an ephemeral material (like chocolate and lard in Janine Antoni's Gnaw) the appearance of the work changes over time; as well as the viewer's experience, since it becomes dependent on in the moment and the status in which one sees the work. (p)
Buskirk, 2003, p. 8
