As the spectacular triumphs of technology mounted, something else was happening: old sources of belief came under siege. Nietzsche announced that God was dead. Darwin didn’t go as far but did make it clear that, if we were children of God, we had come to be so through a much longer and less dignified route than we had imagined, and that in the process we had picked up some strange and unseemly relatives. Marx argued that history had its own agenda and was taking us where it must, irrespective of our wishes. Freud taught that we had no understanding of our deepest needs and could not trust our traditional ways of reasoning to uncover them. John Watson, the founder of behaviorism, showed that free will was an illusion and that our behavior, in the end, was not unlike that of pigeons. And Einstein and his colleagues told us that there were no absolute means of judging anything in any case, that everything was relative. The thrust of a century of scholarship had the effect of making us lose confidence in our belief systems and therefore in ourselves. Amid the conceptual debris, there remained one sure thing to believe in — technology.