I bought the book, and am mostly confused by the whole body system qi-jing-shen thing, but I'm not an acupuncturist, nor am I a follower of TCM (except I'm drinking this really horrid tasting tea right now). It is interesting, though. According to Pitchford, the spleen is part of the liver (earth) system, so most likely I have a deficient PANCREAS (earth) qi. Even more exciting. Wiki has an image that is less than helpful for someone who doesn't know anatomy to begin with. So, as far as I know, my pancreas is somewhere between my neck and my legs. And it has deficient qi.