VISIT CNBC.COMX Entrepreneurs EntrepreneursFacebook CEO Mark Zuckerberg: Elon Musk’s doomsday AI predictions are ‘pretty irresponsible’ Catherine Clifford 25 Mins Ago CNBC.com Photo by Bloomberg Mark Zuckerberg, founder and CEO of Facebook SHARES Facebook CEO Mark Zuckerberg spent his Sunday afternoon smoking meats and doing a Facebook Live from his...