This week, Former Treasury Secretary Lawrence H. Summers on how artificial intelligence is reshaping the way central banks understand, forecast, and manage the economy. And, President Trump’s call for $2 gas may please drivers, but in oil towns like Odessa, falling prices threaten jobs, investment, and the economic foundation of the U.S. energy heartland. Plus, an interview with Johnson & Johnson’s CEO on the golden age of medical innovation. Later, will flying cars soon be a reality?