AI will solve Facebook's most vexing problems, Mark Zuckerberg says. Just don't ask when or how.

Artificial intelligence will solve Facebook's most vexing problems, chief executive Mark Zuckerberg insists. He just can't say when, or how. Zuckerberg referred to AI technology about 23 times during his five-hour testimony before a joint Senate committee hearing Tuesday, saying that it would one day be smart, sophisticated and eagle-eyed enough to fight against a vast variety of platform-spoiling misbehavior, including fake news, hate speech, discriminatory ads and terrorist propaganda. Over the next five to 10 years, he said, artificial intelligence would prove a champion for the world's largest social network in resolving its most pressing crises on a global scale -- while also helping the company dodge pesky questions about censorship, fairness and human moderation. "We started off in my dorm room with not a lot of resources and not having the AI technology to be able to proactively identify a lot of this stuff," Zuckerberg told the lawmakers, referring to Facebook's famous origin story.