“As information technologies come to affect all areas of life, they are becoming implicated in our most important problems — their causes, effects, and solutions, the scientific investigations aimed at explaining them, the concepts created to understand them, the means of discussing them, and even, as in the case of Bill Gates, the wealth required to tackle them. Furthermore, information technologies don’t just modify how we act in the world; they also profoundly affect how we understand the world, how we relate to it, how we see ourselves, how we interact with each other, and how our hopes for a better future are shaped. All these are old philosophical issues, of course, but we must now consider them anew, with the concept of information as a central concern.”

Musk’s alarming views on the dangers of A.I. first went viral after he spoke at M.I.T. in 2014—speculating (pre-Trump) that A.I. was probably humanity’s “biggest existential threat.” He added that he was increasingly inclined to think there should be some national or international regulatory oversight—anathema to Silicon Valley—“to make sure that we don’t do something very foolish.” He went on: “With artificial intelligence, we are summoning the demon. You know all those stories where there’s the guy with the pentagram and the holy water and he’s like, yeah, he’s sure he can control the demon? Doesn’t work out.”

For much of modern history, icebergs have helped us speak about deeper reservoirs of meaning. The phrase “just the tip of the iceberg” has, at least since the environmental movements of the Sixties, expressed the idea that there is much more to something than meets the eye. As the historian William Cronon observes, internalizing nature through language like this is our best way of understanding it—and ourselves.