The Uphill Climb of Time for the Yupno of Papua New Guinea

Yupno River Timeline

The topography of the Upper Yupno valley surrounding the village of Gua. (A) Shows the approximate directions of the source and mouth of the Yupno river. (B) Shows a detail of the Gua area with mean pointing directions for past- and future-category gestures produced outdoors, including 95% confidence cones (based on 1000 parametric bootstrap estimates). The past points downhill through the elevation lines towards the mouth of the rive


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