Because I wanted to clean up a few errors in Chapter 11, as well as put in a couple of things I had forgotten to include, I've just revamped the chapter a bit, including making one feature clearer. I'll be uploading the new version soon. While I changed nothing all that substantive, readers may want to take another look. Thanks to one reader suggesting a couple of typographical error fixes and making a comment that made me realize that one part of the chapter was interpreted differently than I intended. I particularly appreciated that. You know who you are.