(a) Two message sticks were left near an uninhabited camp in the forest, indicating the direction in which the two different persons/families went. Both sticks carry an object inserted into the notch on top of it, which represents a sign of a person's name (red arrow, a piece of cloth; blue arrow, a small piece of carved wood). The length of the stick indicates the distance. (Photo credit: P. Kusuma, Eijkman Institute.) (b) A Punan Batu rolled leaf signifying ‘I/we are hungry’, a request for aid. (Photo credit: J. S. Lansing, Santa Fe Institute.) (c) ‘I am hungry’, from resettled Penan communities of Long Lemai/Kerong, Upper Baram region of Sarawak. (Photo credit: T. Zaman, University College of Technology Sarawak.)