Michael Reynolds definately walks the walk.The book talks about his concept of the Earthship. how to build THEM. How they work and how you too can live virtually independant of the large grid of services available to you. and that in many ways makes you work for the system itself! This book of ideas has evolved and been thoroughly vetted in real life in 3 developments around Taos and countless other places in the world (mostly in the Western US) - so it is a lot less experimental than you might think. The novelty mostly resides with our unfamiliarity with the Earthship.