AJ Jacobs read the entire Encyclopedia Brittanica — cover to cover, all 32 volumes, 33,000+ pages. This afternoon on my show, I didn’t even bother asking him why. Instead, we talked about some of the things he learned, how trivial information he’d read kept popping into his head (even at inappropriate times, like in bed with his wife), plus his adventures with “Jeopardy,” “Who Wants To Be A Millionaire,” and members of Mensa (who he disses even though they allowed him to join via a loophole).

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