Wilson, best known for his role as the aggressively clueless Dwight Schrute on TV's "The Office, " began his talk with random slides ("Here's a baby monkey riding a boar"), gags about the early days of the Internet and jokes about his postings on Twitter, where he has almost 3 million followers.

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As observed in a popular video that de Waal showed in his TED talk, after receiving the first piece of cucumber, the capuchin monkey gives the experimenter a rock as expected.

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