Disclaimer: I haven't read the book.<p>As a physicist, I think it's a bad idea when scientists write popular science books where they try to explain advanced, unproven theories like various interpretations of time and gravity or string theory. First of all, it's not even real science as of now, and second, it gives readers a false sense of understanding: it's like in the (otherwise really bad) movie 'A Serious Man' where a student is complaining to his physics professor after a quantum theory test that he feels his failing grade is unfair, because he didn't know he would be tested on the mathematics and not just the physics ("I understand the physics! The cat if both alive and dead!"). The professor answers that the mathematics is the physics.
Sean Carroll, the physicist interviewed in this article, blogs at <a href="http://blogs.discovermagazine.com/cosmicvariance/" rel="nofollow">http://blogs.discovermagazine.com/cosmicvariance/</a> where (among other things) he's conducting a sort of online book club looking at his recently published book.
If you enjoy this, I recommend watching the following BBC Horizon documentary, "Do you know what time it is?"<p><a href="http://www.youtube.com/view_play_list?p=B6BE0700688DBF9D" rel="nofollow">http://www.youtube.com/view_play_list?p=B6BE0700688DBF9D</a>
This is he giving a talk about this:
<a href="http://www.themonthly.com.au/origin-universe-and-arrow-time-sean-carroll-2196" rel="nofollow">http://www.themonthly.com.au/origin-universe-and-arrow-time-...</a>