This week, we talk to New Canaan resident John Kao, a former Harvard Business School professor and current Turing Fellow at Yale's center for new media who also is a best-selling author and expert on jazz music. His presentation—titled "The World According to Jazz"—will be held at 4 p.m. on Saturday, March 9 at First Presbyterian Church of New Canaan. Presented by the New Canaan Museum & Historical Society and the church, it is free and open to the public.