From the reviews:
The book challenges one of the core assumptions of Plate Tectonics - that the plates are rigid and don't undergo deformation. ... this book is a valuable contribution to the current debate ... . This is an interesting book, about results rather than methods, which is why the author has included such an extensive and valuable reference list. ... this book is a rewarding read that could change your outlook. Geoscientists of all flavours will find something of interest in this book ... . (Kevin McCue, The Australian Geologist, Issue 127, 2003)
A new book with an interesting hypothesis ... A fundamental tenet of plate tectonics is incorrect - namely that the plates are rigid. ... Overall, I found the book to be very well organized ... . The writing is extremely clear. ... The best praise I can give Soft Plate and Impact Tectonics is that I enjoyed reading it, learned a lot, and will recommend it to others. ... The book will be very useful for graduate students. (Basil Tikoff, EOS - American Geophysical Union, Vol. 83 (50), 2002)