PERSON
Oliver Selfridge
The British-American mathematician who drew the floor plan of modern AI in 1958—his demon architecture of competing, learning feature-detectors is the conceptual skeleton of every deep neural network on Earth—and who spent his final years warning that the architecture, by itself, would never be enough.
In 1958, Oliver Selfridge stood before a symposium in Teddington and described a machine made of demons: small, stupid, shrieking agents, each watching for one feature of the world, each yelling louder the more certain it became, and a final demon that simply listened for whoever shouted loudest and declared the answer. He called the system Pandemonium, after the capital of Hell in Milton’s
Paradise Lost—the place whose Greek name means “all the demons.” Six decades later, the most powerful artificial minds on Earth are built almost exactly this way: vast layered choruses of simple feature-detectors, their weights adjusted by experience until the chorus, as a whole, sees, recognizes, and converses. The grandfather of
neural networks, the man who mentored
Marvin Minsky and roomed with the logicians who founded neural computation, does not appear in most of their citation graphs. He is in their architecture instead. But Selfridge’s final