In case you did not notice everyone is now able to comment, a google password is no longer required. So please feel free to comment as often as you like. I am trying to encourage commenting because I don't know everything; other people have very good points of view and I like to hear them; and I enjoy a good, well-reasoned discussion.
3 basic rules for commenting:
1. No swearing.
2. No calling other commenters names.
3. No advertising or promoting products, services, stocks, etc.
I do have editorial control of the comment page and I do delete comments. So far, it has always been someone trying to sell something.