There could be benefits from artificial intelligence, self-made billionaire, Alibaba chairman Jack Ma said, as people are freed to work less and travel more. From a report: "I think in the next 30 years, people only work four hours a day and maybe four days a week," Ma said. "My grandfather worked 16 hours a day in the farmland and [thought he was] very busy. We work eight hours, five days a week and think we are very busy." He added that if people today are able to visit 30 places, in three decades it will be 300 places. Still, Ma said the rich and poor -- the workers and the bosses -- will be increasingly defined by data and automation unless governments show more willingness to make "hard choices." "The first technology revolution caused World War I," he said, "The second technology revolution caused World War II. This is the third technology revolution."