WASHINGTON -- Since the Pentagon's Defense Advanced Research Projects Agency, or DARPA, began shaping the so-called "first wave" of artificial intelligence in the 1960s, the U.S. has been leading the world in AI adoption.
In the ensuing five decades, AI has moved from machines carrying out human-programmed rules to statistical learning, the second wave, and now to a third wave that brings forth machines that understand and reason in context.
