Life is full of a thousand red herrings, and it takes the history of a civilisation to work out which are the red herrings and which aren't. - Peter Greenaway

It is Vesalius' Anatomy of Birth -- a book of drawings and diagrams of human anatomy. Beautiful drawings but -- as the pages turn -- terrible in their frankness...

John Cage, composer, painter, and all-round thinker and cultural catalyst, said that if you introduce twenty percent of novelty into any artwork, watch out -- you are going to lose eighty percent of your audience at once. He said you would lose them for fifteen years. Cage was interested in fifteen-year cycles. But he was hopelessly optimistic. The general appreciation, for example, of Western painting has got stuck around Impressionism, and that was 130 years ago, not fifteen years ago.

Later this device of mirror and mirror-carriers will be developed and many changes rung from its possibilities.