Wonder, the Rainbow and the Aesthetics of Rare Experiences.

It is a rare and wonderful experience to pick up a book found accidentally to find it speaks directly to one's senses. It is rarer still to find a colleague who has also found the same book, again fortuitously, and responded similruly. This piece describes a book which sounds as if it has little to do with our field, but which turns out to have much to do with mathematics, with education, and mathematics education in pruticulru. Both of us have used it in our work First, we explain aspects of our work to which this book speaks, before detailing how