This book is a revelation and I wish I had known about it when I was at art college doing a degree in art history/philosophy/studio practice. This book proves how far Duchamp was ahead of the game during his era, but what makes it all the more poignant is the cleverness in his playing of the game and how he saw through successive style movements and realised how one could be accidently popular/fashionable re: the critics and gallery owners of the time. Marcel never hung out with the crowd, hated opening nights and was lazy, he only did what he wanted to do. This book reveals many things and is an essential bible for all arts people, but there is still a mystery at the core and that was his mastery. There is no art without mystery and Marcel's mystery was his intellect.
Another bonus of this book is that it is revealing and succinct, it does not drag on and on. for any art student etc. they will learn a lot about contemporary art in quick time. This is not a tome, but it is short and revelatory and will stay with you longer than Gombrich.
Saatchi and Saatchi art, Tate Prize and most art nowadays lives in a crude hangover of Duchamp's piercing foresight. We latched on to him, never quite understood him and have never recovered from him. This book provides you with the mystery of him and all the cheap dishonest permutations since.
This book is a decoding and encoding of ready made art, minimal art, installation art and is a must read for all art historians and students.