Anti-concurrent cause: can an uncovered cause be superfluous to the analysis?

Despite the fact that anti-concurrent cause language has been around for quite a few years, if you go looking for the Anti-Concurrent Philosophy Library, you won't find it -- you'd be lucky to find enough to make up a slim book, much less a library or even a shelf in a library. In other words, as with many insurance coverage issues, there is a great deal of room for scholarly examination. You might have noticed the same thing I have -- when you research just about any tough question, it's not hard to find stuff that appears to be about the subject, but when you drill down into it, most of what you find is surface area with no core underneath. The emphasis in the mass of legal literature on discovering what courts do -- the search for rules -- is often a chimera because, and I say