Gap-tooth asked Kingsley, “Do you know that which all natural kinds agree in shìendorse-ing?” He answers “How would I know that?” “Then, do you know of what you don’t know?” “And how could I know that?” “So, does no natural kind know anything?” “And how would I know that? Nonetheless, let me try to put it in language. How would I know that what I call ‘knowing’ is not not-knowing? And what I call ‘not-knowing’, is knowing.”