Does the world need two books this year about Elon Musk? Biographer Walter Isaacson came out with his 688-page tome “Elon Musk” in September. Now comes Newton author Ben Mezrich, who describes his contribution — “Breaking Twitter: Elon Musk and the Most Controversial Corporate Takeover in History” — as the “book Elon does not want you to read.” Mezrich is this week’s guest on the Globe’s Say More podcast with Shirley Leung. Listen at globe.com/saymore, and wherever you find your podcasts. Isaacson had unprecedented access to Musk — the CEO of electric vehicle giant Tesla and rocket maker SpaceX, and...