Below is a link to another forum discussing this book. They give a very bad explanation of light bending in a crystal, but 'Hurkyl' does a very reasonable job with magnets, gravity, and energy that McCutcheon really butchers in the above mentioned chapter of his book:

http://www.physicsforums.com/showthread.php?s=de041301ed9f9249a6404578e05f5028&threadid=2972