Bloomberg Opinion columnist Barry Ritholtz is joined by Bloomberg senior editor John Authers and Bloomberg Markets editor-in-chief Christine Harper to discuss âCapital Ideas: The Improbable Origins of Modern Wall Street.â Peter Bernsteinâs classic account of how a group of academics transformed Wall Street with bold new theories for managing risk is the first book in Bloombergâs new book club. To join Bloombergâs book club, email authersnotes@bloomberg.net or use #AuthersNotes on Twitter.