I don't know if this is anything that people get bugged by....but, there are two types of zones for permies. There is your ecological zone as described by your friends at USDA. And your zone as described by Mollison. I think that it may be worth while to explore the possibility of renaming one or the other to be more unique so that both could be use in the same sentence and not get confused. It's semantic of
course, as all language discussion is, but worth thinking about.
Is this a point of contention for anybody else or is it just me?