Marvin Minsky is worried that after making great strides in its infancy, AI has lost its way, getting bogged down in different theories of machine learning. Researchers "have tried to invent single techniques that could deal with all problems, but each method works only in certain domains." Minsky believes we’re facing an AI emergency, since soon there won't be enough human workers to perform the necessary tasks for our rapidly aging population.

So while we have a computer program that can beat a world chess champion, we don't have one that can reach for an umbrella on a rainy day, or put a pillow in a pillow case. For "a machine to have common sense, it must know 50 million such things," and like a human, activate different kinds of expertise in different realms of thought, says Minsky.