"A Choreographer's Handbook" by Jonathan Burrows

"By comparison with music, dance performance remains largely unbound by ever-present libraries of the historical canon. It easily forgets its own history and is therefore constantly in the process of reinventing itself, recast each time in a new body for a new decade. This is one reason dance remains one of the most experimental of art forms."
- page 199

Then surely there is the other extreme of people and bodies dedicated to the work of remembering what was, and that which succeeds in remaining in memory can dominate the conversation by virtue of that fact, whilst the forgotten great fades to leave room for new greats. The quiet ones are the ones to look out for.