46x27 - 60 Minutes

Steve Kroft reports on a new book from Michael Lewis, "Flash Boys," that reveals how a group of unlikely characters discovered how some high speed traders work the stock market to their advantage; then, Scott Pelley profiles Elon Musk, who at 42 years old is a billionaire Silicon Valley entrepreneur; and, Roberts lost his sight as a child, but gained incredible insight into American music -- inspiring a generation of jazz musicians.