Seventy years of highs and lows in the history of machine learning

Cold War concerns U.S. government agencies like the Defense Advanced Research Projects Agency (DARPA) fund AI research at universities such as MIT, hoping for machines that will translate Russian instantly. I'm afraid I can't do that." The winter lasts two decades, with just a few heat waves of progress. Common-sense AI Douglas Lenat sets out to construct an AI that can do common-sense reasoning. He develops it for 30 years before it is used commercially.