No surprise. A familiar pattern. It used to be galling to realize I was not dealing with a man's reason but his will. The will is impervious to argument, and it is that poster's will to belittle the benefits of wearing a helmet, come what may.

First he dismisses a reasoned argument about the fragility of the human head with naked assertions, but to disguise his ferrous will with reasonableness asks for hard figures and statistics, "I'm all ears." Yet when provided with relevant numbers and statistics, he ignores them completely, and dismisses carefully researched professional reports as "hyperbole."

At this point, unless insincerity is part of your arsenal, your signature provides the best explanation for our short and regrettable conversation.