No matter how different they seem—the learned and contemplative neuroscientist versus the toy orangutan with a penchant for off-color jokes—almost any adult who experiences them knows that Princeton University professor Michael Graziano is the voice behind his simian puppet Kevin. Yet to most listeners, Kevin—who acts as the comic relief when Graziano publicly presents his work—nonetheless has a distinct personality and consciousness—he seems aware of and comments on his surroundings in his own unique way.
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