When we were planning the structure of this book, everyone was telling us that it really should have at least ten chapters. Why? Apparently, ten is some mystical number that instills confidence in book-buyers, giving them a heightened sense of comfort in their purchase. Problem was, we had pretty much determined the chapters we wanted, giving the book the logical divisions that we felt it needed. "Sorry," we told them, "Nine chapters is all you're going to get, but they will be nine memorable chapters, you can be sure of that!" Well, our stance of "nine is enough" was met with looks of amusement as we were introduced to a new member of the book-editing team. Saying his name aloud brings back too many painful memories, so let us instead introduce Chapter 10, the other half of what we originally had planned as Chapter 9 (and we have to admit it, it was a good call).