Sheryl Sandberg, billionaire and chief operating officer of Facebook Inc., left, listens as Eric Schmidt, chairman of Google Inc., speaks during a session on day two of the World Economic Forum (WEF) in Davos, Switzerland, on Thursday, Jan. 22, 2015. World leaders, influential executives, bankers and policy makers attend the 45th annual meeting of the World Economic Forum in Davos from Jan. 21-24. Photographer: Chris Ratcliffe/Bloomberg via Getty Images
