Friends often ask, how is your new book doing? They're asking about sales, as though there's a magical courier that whispers hourly updates in my ear. I don't believe in magic of the supernatural type (psi is not that sort of magic), but we do have a modern version of a quasi-magical courier -- the sales ratings on Amazon.com.
On that front I see a nice trend developing. I requested that Entangled Minds be cross-listed as both a Science book and as a Religion-Spirituality book. The first category is appropriate because this book is ultimately about science. The second category is necessary because topics like psi are historically associated with the occult, so in existing book categories there's nowhere else to place it.
Within these two categories, as of this posting the book is rated #2 among Science/General books, and #2 in Religion-Spirituality/Occult. I'm pleased to see this, because the wall between science and the occult is a vestige of old prejudices that, like the Berlin Wall, has prevented meaningful communication between two ways of viewing the world, and as such it's a barrier that's ripe for demolition. So perhaps this is a good sign.
(From a more mundane perspective, the correlated ratings are partially driven by cross-listing, although there aren't many books in these two categories that are cross-listed.)