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GPS Built-In to Monkeys
Two European researchers spent 217 days following around a tribe of 15 chimpanzees — and they proved the monkeys were doing something strange: travelling in perfectly straight lines “using a mental map built around geometric coordinates.”
In effect, monkeys have a built-in mental GPS, keeping “a geometric mental map of their home range, moving from point to point in nearly straight lines.”
They’re not just identifying landmarks in their surroundings, and even when swinging through trees, the chimpanzees planned their route out several trees in advance!
