Earlier this month, Musk delivered a scary message while speaking to the National Governors Association: "I have exposure to the most cutting edge AI, and I think people should be really concerned by it. AI is a fundamental risk to the existence of human civilization."

On Sunday, Zuckerberg was dismissive of such warnings. "I think people who are naysayers and try to drum up these doomsday scenarios I just, I don't understand it. It's really negative and in some ways I actually think it is pretty irresponsible," he says.

In response, on Tuesday, SpaceX and Tesla CEO Musk tweeted a rebuke: "I've talked to Mark about this. His understanding of the subject is limited."

In the same week that Zuckerberg and Musk spar over the potential for artificial intelligence, another billionaire tech titan, Mark Cuban, says AI "scares the s--- out of me" and, at the same time, Cuban says that Canada and China are handily beating the U.S. in their pace of developing artificial intelligence.

On the heels of Musk's dig at Zuckerberg, his post Tuesday night also announced that the Facebook AI Research team and researchers at Cornell and Tsinghua together won an award for their recent paper on "Densely Connected Convolutional Networks."

See also:

Facebook CEO Mark Zuckerberg: Elon Musk's doomsday AI predictions are 'pretty irresponsible'

Elon Musk: 'Robots will be able to do everything better than us'

Warren Buffett and Bill Gates think it's 'crazy' to view job-stealing robots as bad

See original here:

Mark Zuckerberg doubles down defending AI after Elon Musk says his understanding of it is 'limited' - CNBC