It still amazes me how little we really knew. We had rockets and satellites and nanotechnology. We had robot arms and robot hands, robots for roving the surface of Mars. Our unmanned planes, controlled remotely, could hear human voices from three miles away. We could manufacture skin, clone sheep. We could make a dead man’s heart pump blood through the body of a stranger. We were making great strides in the realms of love and sadness—we had drugs to spur desire, drugs for melting pain. We performed all sorts of miracles: We could make the blind see and the deaf hear, and doctors daily conjured
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