The idea that there is such a thing as fixed form is actually as much an assumption about perception as it is an assumption about art. It assumes that vision is not dynamic – that it is a passive, transparent registering of something that is just there, simply and inertly. If vision is stable, then to make art dynamic you have to add movement. But if vision is already dynamic, the question changes. It’s not an issue of movement or no movement. The movement is always there in any case. So you have to make distinctions between kinds of movement, kinds of experiential dynamics, and then ask what difference they make. - Brian Massumi