We are all endowed with a singularly unique perspective.  My recently divorced friends sees weddings and the relationship between a bride and groom in a way I cannot.  And the black woman on the bus, watching the young white boy tourist with his mother avoiding sitting next to her, is able to chuckle at this ignorance in a way I never could.  A mother of one of my students is able to scold her and love her deeply in a way I am not entitled to understand.