I do much of my writing on Facebook for a small group of friends who seem to find it interesting. I really like some of the essays and have decided to preserve them here. Going forward, there will be posts that are not entirely well formed because they were written during a conversation there that is not entirely reproduced here. In the one that motivates this note, I am adding a brief, italicized summary of the idea that motivated the second section of the note. As time goes on, I will probably figure other ways to carry my Facebook work into this blog.