I appreciate that Dr. Bruce brings the arts into the nanotechnology discussion. Why shouldn’t the arts offer criteria for reasonable human enhancement? Defining what it means to be human has always been one of art’s most basic functions, from Oedipus to Prometheus Bound to Cyborg. The ancient Greeks, for example, prohibited citizens from building homes of marble because marble was reserved for sacred buildings. Is it so farfetched to consider the sacred and our relationship to it now that we have the technological power to transcend some of the biological boundaries that have defined our humanity until now?