The book description reads " Following in the footsteps of Christopher Hitchens, Roger Penrose, and even Stephen Hawking, Jim Holt emerges with an engrossing narrative that traces our latest efforts to grasp the origins of the universe." Now, please don't take this the wrong way, but why is Christopher Hitchens mentioned? I am a fan of Mr. Hitchens' work but unless we count 'god IS NOT GREAT' as a read in metaphysics it seems to me he has not contributed much to our understand of cosmology....Again, I am not trying to make an attack against Hitchens, i simply feel that he is not a cosmologist, physicist, or any sort of scientist and probably should not be counted as such.
Checking "Look Inside the Book," I see Hitchens is mentioned a couple of times. I strongly suspect that his rather prominent position in the book description copy (written by the publisher or Amazon) is primarily to capture the interest of more readers by associating the book with a popular and bestselling author, and thus potentially generate more sales.
Contariwise, if the book description read, "Following in the footsteps of Jean-Paul Sartre, Derek Parfit, and even Adolf Grünbaum," the vast majority of potential buyers would probably look elsewhere.