Elon Musk is, without a doubt, one of the most forward-thinking people working in technology today. The co-founder of PayPal is one of the key people behind SpaceX and Tesla Motors, as well as his ambitious concept for the Hyperloop method of fast travel.

Even Elon Musk feels there are limits when it comes to technology, however, and during a talk at MIT last week he issued a stark warning about the potential dangers of artificial intelligence.

He explained how he feels humanity has to be 'very careful' about AI, and that it poses 'our biggest existential threat'. He told the audience "I’m increasingly inclined to think that there should be some regulatory oversight, maybe at the national and international level, just to make sure that we don’t do something very foolish. With artificial intelligence we are summoning the demon." 

You can watch the whole fascinating interview with Musk below, with the AI comments coming around the 1 hour, 7 minute mark.