“With artificial intelligence, we are summoning the demon,” Musk said last week at the MIT Aeronautics and Astronautics Department’s 2014 Centennial Symposium. “You know all those stories where there’s the guy with the pentagram and the holy water and he’s like… yeah, he’s sure he can control the demon, [but] it doesn’t work out.”

This has become a recurring theme in Musk’s public comments, and each time he warns of the AI bogeyman it seems even more dire. MORE