Of course there is the case in which a general explanation was given to B, say, “We shall call ‘pencil’ anything that one can easily write with on a wax tablet”. Then A shews B amongst other objects a small pointed object, and B says, “Oh, this is a pencil”, after having thought, “One could write with this quite easily”. In this case, we may say, a derivation takes place. In 8), 9), 10) there is no derivation. In 4) we might say that B derived that the object shewn to him was a pencil by means of a paradigm, or else no such derivation might have taken place.