Jack Dorsey, co-founder and chief executive officer of Twitter Inc., walks the grounds during the Allen & Co. Media and Technology Conference in Sun Valley, Idaho, U.S., on Wednesday, July 6, 2016. Billionaires, chief executive officers, and leaders from the technology, media, and finance industries gather this week at the Idaho mountain resort conference hosted by investment banking firm Allen & Co. Photographer: David Paul Morris/Bloomberg via Getty Images
