'New York Times' baseball writer Tyler Kepner spoke to 22 hall-of-fame pitchers about what they throw, and how they get a mental edge over hitters. His new book is 'K: A History of Baseball in Ten Pitches.'Also, Maureen Corrigan reviews the novel 'Lost and Wanted' by Nell Freudenberger, about an MIT physicist who finds her rational understanding of the universe challenged by the death of a friend.