I reviewed Right Hand, Left Hand by Chris McManus several years ago. I gave it two stars for importance and I still think it thoroughly deserves them for quality and importance. In the review I included a link to McManus's web site. I hadn't visited that for some time but now I've done so and found extensive and fascinating notes and updates on his book. They are wide-ranging, spanning, science, biology, philosophy, and literature. Well worth a visit. I wish McManus would bring out a new edition of his book to include some of this material, although, as he says, the Internet offers a unique opportunity to provide more than could easily be incorporated into a published book.