Book excerpt: Can there still be anything new to say about the erotic, sexy play, and desire? YES, because what drives each of us to any sexual fixation-from feet or fat to latex or ponyplay-may hold mysteries, but can never be inexplicable. YES, because even the most seemingly unusual kinks and fetishes, like trample and crush, cannibal play, quicksand and male pregnancy, derive from such universal themes as power and transformation. YES, because when some taboos crumble, others emerge, with often surprising, delightful, and even disturbing consequences for our psyches and libidos. YES, because as human culture evolves, we newly discover sexual excitement and fulfillment from scenarios (such as car accidents) and objects (like gas masks and medical equipment) that never existed before. YES, because wherever there is darkness, secrecy, and silence, what's most essential is light, revelation, and ever better communication.