In the kindest interpretation, these are two aspects of one person. There is the casual one in a t-shirt, jeans and sneakers, eating a slice of pizza. Then there is the formal one in jacket, slacks and shoes, holding a glass of wine, and surrounded by elegant furnishings. However, as the title implies, the casual one becomes an impersonator when he steps into the other’s shoes. And while he can spend some small amount of time enjoying a richer lifestyle, it is not his authentic self, to which he eventually returns.
