Zuckerberg, Musk Invest in Artificial-Intelligence Company Vicarious 
   * First Law: A robot must never harm a human being or, through inaction, allow any human to come to harm.
   * Second Law: A robot must obey the orders given to them by human beings, except where such orders violate the First Law.
   * Third Law: A robot must protect its own existence unless this violates the First or Second Laws.