We’re a long way off from being able to create a single human-equivalent A.I., let alone billions of them. For the foreseeable future, the ongoing technological explosion will be driven by humans using previously invented tools to invent new ones; there won’t be a “last invention that man need ever make.” In one respect, this is reassuring, because, contrary to Good’s claim, human intelligence will never be “left far behind.” But, in the same way that we needn’t worry about a superhumanly intelligent A.I. destroying civilization, we shouldn’t look forward to a superhumanly intelligent A.I. saving us in spite of ourselves. For better or worse, the fate of our species will depend on human decision-making.

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