From The New Atlantis:
[Author David] Levy fails to see the trouble with his fantasy, because he begins by missing altogether the meaning of marriage, sex, and love. He errs not in overestimating the potential of machines, but in underrating the human experience. He sees only matter in motion, and easily imagines how other matter might move better. He sees a simple physical challenge, and so finds a simple material solution. But there is more to life than bodies in a rhythmic, programmed dance of “living likeness.” That which the living likeness is like is far from simple, and more than material. Our wants and needs and joys and sorrows run too deep to be adequately imitated. Only those blind to that depth could imagine they might be capable of producing a machine like themselves. But even they are mistaken.