The other day as I drove home from volunteering at my son’s school, the sun was shining in just the right spot to blind  me.  It wasn’t glaring through the wind shield.  It wasn’t quite shining through the side window.  Instead, it was glinting somewhere in between and right into my eyes. As I drove along, alone with my thoughts for a rare few minutes, I squinted against the brightness.  After some time, it dawned on me that there is a lovely invention called a visor.  Reaching up, I flicked the visor down into place.  As soon as the shade hit my eyes, I uttered an involuntary, audible sigh of…