Machines that Think

How did artificial intelligence become the most powerful technology on the planet?
Sometime in the future the intelligence of machines will exceed that of human brain power. So are we on the edge of an AI-pocalypse, with superintelligent devices superseding humanity, as predicted by Stephen Hawking? Or will this herald a kind of Utopia, with machines doing a far better job at complex tasks than us?

You might not realize it, but you interact with AIs every day. They route your phone calls, ap...