Well, I got an interesting answer to the question, How does soap work? I got a not really helpful answer to the question How can an airplane fly upside down? And as for friction, not much help there save to say that it is complicated. I would still like to really understand how a plane can fly upside down. I guess friction will remain a mystery. But on another matter entirely, my general sense was confirmed that no matter what you say on a blog, someone out there will care about it. In passing I referred to Great Pyrenees, which are utterly hugable dogs, and sure enough one of my readers owns a Great Pyrenees. It never fails.
Enough of light-hearted posts. I must try to return to serious stuff. Maybe the event tomorrow will provoke some deep thoughts. We shall see.