But when it comes to pointing or showing where attention is, the eyes have it.

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To borrow a familiar metaphor, while we're pointing out the trees of misperception in someone else's eyes, we're blinded by, and to, the forest in our own.

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But the non-human apes paid the most attention to where the experimenter's head was pointing, in particular, looking up when the head was pointed up, no matter what the eyes were doing.

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We were also treated to a walking tour of the floor using the SMI goggles, which were able to show on a laptop exactly where we were pointing our eyes.

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