I wonder what it is about the subject of armor class in D&D that makes it such a flashpoint for discussion and argument. I mean, I only mentioned armor class in passing, without any substantive thoughts about it, in a post last week, and it's become not only the primary thing being discussed in the comments to that post but also a continuing source of discussion, since there are still new comments being made about it. Likewise, yesterday's post has, in less than 24 hours, become one of the most commented upon posts I've made all year. I suspect that, in fairly short order, it will become the most commented upon post.
And all about a quirky little mechanic that nearly every RPG after D&D rejected and that even many D&D players don't like very much. It's an interesting phenomenon and I'm honestly not sure what to make of it.