I'm not surprised there are very few reviews of this as I understood almost none of it - but that's what I like in this sort of book. My partner picked it up as a present for me in a charity shop and I spent some very pleasant times just reading through the section headings, although having now read it cover to cover I'm not sure why I found 'Arbitrary suspension of the Equivalence Princlple' or 'Attempts to eliminate the "dark star" explanation' so enthralling. I liked the name of Acoustic Metrics but after looking it up on the internet I am no wiser. Nonetheless I have enjoyed it a lot. ( )