Chuck -- YOU BETTER NOT QUIT making comments! They are very much appreciated. Open disagreement is why we have email discussion groups. If we simply wanted to read rather than discuss, we'd subscribe to the paper and not an astronomy email list. The advantage of this forum is its give and take. It's not only a bulletin board telling you that a certain star is going supernova -- it is that, but also a chance to hash things out, have a great big ol' donnybrook of a disagreement once in a while, maybe get to the truth, and still remain friends. I really value your thoughts. I don't want to tiptoe around and never get into controversies -- there's too much of that in my professional life. It is a refreshing to read a variety of ideas, strongly presented. If you care enough to comment with a bit of heat, all the better. So don't you dare drop out. -- Joe