text: There millions of reason why it not valuable well for one a person could be looking happy in the picture but be reallly sad emotional . I see it everyday at in the world .Like for explain when someone die and they go to a furel you got to look cool or happy ,but on the inside your heart broken and never be the same . And you take a picture on a computer and it would say you are happen but you really not because computer don't know emontional they just know knowledge .