This post was triggered by something in the New York Times about “Julia,” a chimpanzee in a sanctuary in Zambia so named by the observing humans. The humans noticed her sticking blades of grass in her ears and this being adopted by other chimpanzees in the same sanctuary, and then passed on in further generations even after she died (Natalie Angier “Meet the Other Social Influencers of the Animal Kingdom” May 7, 2021). The original paper by Andrew Whiten (“The burgeoning reach of animal culture.” Science April 2, 2021) worked off a definition of culture ” as all that is learned from others and is repeatedly transmitted in this way, forming traditions that may be inherited by successive generations.” This was presented as part of the argument against human centeredness. “Culture” must have universal evolutionary advantages for all life forms as it allows “traits” (such as “grass in ears”) to move “horizontally” (through discovery/learning/teaching) among adults and their descendants as well as “vertically” (through genetic drift and biological reproduction).

I will leave the evolutionary implications to the authors of the various articles quoted by Angier, and translated into NYT speak. What fascinates me is the production of the trait in the history of the group. Van Leewen et al. who first reported on the case emphasize that they could not find anything functional to the behavior. They titled their paper “group-specific arbitrary tradition”—an excellent definition of “culture” (and a better one than Whiten’s). Interestingly, no one in the small crowd indexed by the journalist appears to have looked for the origin of the behavior, thereby suggesting that it was an “original.” Someone who commented on the first reporting of the case in the Smithsonian Magazine wondered whether Julia had picked up on something she saw a human do, e.g. wear earrings. But we are not given any evidence on the (pre-)history of the behavior. So, we are told of a behavior (“grass-in-hear”) that is, as Lévi-Strauss once said, subsequently “adopted on a collective mode” (1971:  560) and thus becomes a “trait” somehow distinctive (Bourdieu 1977 [1970]:5) of the group.

Continue reading Chimpanzees, culture, diffusion (and ode to joy?) →