Demis Hassabis—the outgoing head of Google DeepMind and incoming chief scientist of Alphabet, Google’s parent—might be correct. Last month, he wrote that artificial general intelligence “a system that exhibits all the cognitive capabilities the brain has, is probably only a few short years away.” And that humanity is thus standing in the “foothills of the singularity.” Foothills are a geographic middle ground between lowlands and mountains. The …