In defense of the book, it did lead me to search for new sources of information that I could apply in my own garden. Searches that only months later have led me here. I don't even know what permaculture is, but by morning I bet I'll have a pretty good idea after digging through this site. With what little I've read so far, it definitely sounds like something interesting.
What annoyed me about the book (and most others like it), was a recurring theme of needing to have at least a certain amount of space available (which almost always seems to be more than I have) to do anything worthwhile. Not only to grow 'sufficient' amounts, but also to be able to rotate/rest. My garden space is roughly 120 sq. ft., and with the exception of some supplementary space from containers on the deck, where it is, is where it has to stay. No rotating in my future as far as I can tell. As far as 'sufficient' goes, the most I can grow of the best/safest quality is sufficient enough for me at this point, not necessarily what someone thinking in terms of portions of acreage instead of square feet says I need.