Facebook founder and chief executive Mark Zuckerberg told an audience that if he could do it all over again, he would have stayed in Boston.
"If I were starting now I would do things very differently," Zuckerberg said in front of a crowd at the Y Combinator Startup School on Saturday. "I didn't know anything. In Silicon Valley, you get this feeling that you have to be out here. But it's not the only place to be. If I were starting now, I would have stayed in Boston. [Silicon Valley] is a little short-term focused and that bothers me."