High-tech entrepreneur Elon Musk made headlines when he said artificial intelligence research is a danger to humanity, but researchers from some of the top U.S. universities say he’s not so far off the mark.

“At first I was surprised and then I thought, ‘this is not completely crazy,'” said Andrew Moore, dean of the School of Computer Science at Carnegie Mellon University. “I actually do think this is a valid concern and it’s really an interesting one. It’s a remote, far future danger but sometime we’re going to have to think about it. If we’re at all close to building these super-intelligent, powerful machines, we should absolutely stop and figure out what we’re doing.”

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