You know....that's a really go rewrite you did. You have me pondering the usefulness of my tool. I'm not ready to abandon it but you've convinced me that it needs refining.
Still, I started off making an entirely different point - (that there are many good values that can't be inverted) on which I think we were agreed. So in the end I really argued most strongly (and took the biggest karma hit on) for things we actually agreed on! So thanks for your discussion, too :).
Thanks!