PRESERVING THE DANCE HERITAGE: FILM OR NOTATION?

“What do we need a notation system for, when we have the video?
Would you an actor only learn his role of Shakespeare’s Hamlet, from the DVD of Mel Gibson’s version of Hamlet? Would you ask musician to learn his part in the orchestra by listening to it? No one would ever think of doing such a thing, and yet that’s how it’s mainly done in the dance world.