Suppose Romeo and Juliet opened with Romeo having to decide with whom to fall in love. And suppose even after making a decision, Romeo could always retract and make a different choice instead. What kind of play would it have been? Well, that’s the play technological progress is trying to produce for us. When our desires make us uncomfortable, technology promises to bail us out. When the nail on which the entire universe hangs is pegged in a problematic spot, technology will pull it out and stick it somewhere else. But where exactly? If I could peg that nail anywhere in the cosmos, where should
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