Rick Rosner - the second-smartest man in the world as ranked by ... compiled by the World Genius Directory, only one other person has ever gotten a higher score on an adult, high-end IQ test.

When asked about the smartest person he's met, Musk mentioned Larry Ellison, Larry Page, and Jeff Bezos. His comments on a podcast come as tech titans are losing billions amid a Nasdaq slide.

Rick Rosner is the second-smartest man in the world as ranked by intelligence tests. He's somewhat of a health junkie, too. On the rare occasions that Rosner eats pizza, he peels off most of the ...