Do you remember your favorite imaginary persona from childhood? We all have them. Some of us have a cast of thousands, and some of us have one or two trusted identities we would slip into again and again. I had a few favorites. In one I liked to dress-up with a grey wig and glasses and come to my grandmother’s door as some sort of roving salesperson – not quite vacuum salesperson and not quite Avon lady. Yet classy. And apparently near-sighted. Another favorite of mine was, o