Does Artificial Intelligence represent a major threat to humankind or a major opportunity?

Tesla & SpaceX visionary, Elon Musk believes the time is now to sound the alarms and assemble top thinkers and regulators with the mandate to address and contain the rising threat head-on. In sharp contrast, Facebook founder, Mark Zuckerberg, is bullish on AI and dismissive of alarmists like Musk.

So, who has it right?