Are We Smart Enough to Know How Smart Animals Are?(50)

There is also the issue of continued evolution. It is a widespread misconception that humans kept evolving while our closest relatives stopped. The only one who stopped, however, is the missing link: the last common ancestor of humans and apes, so named because it went extinct long ago. This link will forever remain missing unless we happen to dig up some fossil remains. I named my research center Living Links, in a wordplay on the missing link, since we study chimpanzees and bonobos as live links to the past. The name has caught on, because there are now a few other Living Links centers in the world. Traits shared across all three species—our two closest ape relatives and ourselves—likely have the same evolutionary roots.

But apart from commonalities, all three species also evolved in their own separate ways. Since there is no such thing as halted evolution, all three probably changed substantially. Some of these evolutionary changes gave our relatives an advantage, such as the resistance to the HIV-1 virus that evolved in West African chimps long before the AIDS epidemic devastated humanity.65 Human immunity has some serious catching up to do. Similarly, all three species—not just ours—had time to evolve cognitive specializations. No natural law says that our species has to be best at everything, which is why we should be prepared for more discoveries such as Ayumu’s flash memory or the selective imitative talents of apes. A Dutch educational program recently brought out an advertisement in which human children face the floating peanut task (see Chapter 3). Even though the members of our species have a bottle of water standing not too far away, they fail to think of the solution until they see a video of apes solving the same problem. Some apes do so spontaneously, even when there is no bottle around to suggest what to do. They walk to the faucet where they know water can be collected. The point of the ad is that schools should teach kids to think outside the box, using apes as an inspiration.66

The more we know about animal cognition, the more examples of this kind may come to light. The American primatologist Chris Martin, at the PRI in Japan, has added yet another chimpanzee forte. Using separate computer screens, he had apes play a competitive game that required them to anticipate one another’s moves. Could they outguess their rivals based on their previous choices, a bit like the rock-paper-scissors game? Martin had humans play the same game. The chimps outperformed the humans, reaching optimal performance more quickly and completely than members of our own species. The scientists attributed the edge to chimps being quicker at predicting a rival’s moves and countermoves.67

This finding resonated with me, given what I know about the politics and preemptive tactics of chimpanzees. Chimp status is based on alliances, in which males support one another. Reigning alpha males protect their power by a divide-and-rule strategy, and they particularly hate it when one of their rivals cozies up to one of their own supporters. They try to forestall hostile collusions. Moreover, not unlike presidential candidates who hold babies up in the air as soon as the cameras are rolling, male chimps vying for power develop a sudden interest in infants, which they hold and tickle in order to curry favor with the females.68 Female support can make a huge difference in rivalries among males, so making a good impression on them is important. Given the tactical shrewdness of chimpanzees, it is a great advance that computer games now help us put these remarkable skills to the test.

We have no good reason to focus solely on chimpanzees, though. They often serve as a starting point, but “chimpocentrism” is a mere extension of anthropocentrism.69 Why not focus on other species that lend themselves to explore specific aspects of cognition? We could focus on a small number of organisms as test cases. We already do so in medicine and general biology. Geneticists exploit fruit flies and zebra fish, and students of neural development have gotten much mileage out of research on nematode worms. Not everyone realizes that science works this way, which is why scientists were dumbfounded by the complaint of former vice-presidential candidate Sarah Palin that tax dollars were going to useless projects such as “fruit fly research in Paris, France. I kid you not.”70 It may sound silly to some, but the humble Drosophila has long been our main workhorse in genetics, yielding insight in the relation between chromosomes and genes. A small set of animals produces basic knowledge applicable to many other species, including ourselves. The same applies to cognitive research, such as the way rats and pigeons have shaped our view of memory. I imagine a future in which we explore a range of capacities in specific organisms on the assumption of generalizability. We may end up studying technical skills in New Caledonian crows and capuchin monkeys, conformity in guppies, empathy in canids, object categorization in parrots, and so on.

Yet all this requires that we circumvent the fragile human ego and treat cognition like any other biological phenomenon. If cognition’s basic features derive from gradual descent with modification, then notions of leaps, bounds, and sparks are out of order. Instead of a gap, we face a gently sloping beach created by the steady pounding of millions of waves. Even if human intellect is higher up on the beach, it was shaped by the same forces battering the same shore.





6 SOCIAL SKILLS



The old male faced a choice worthy of a politician. Every day Yeroen was being groomed by two rivaling males, each one eager to gain his backing. He seemed to enjoy the attention. Being groomed by the mighty alpha male, the one who had deposed him a year earlier, was utterly relaxing because no one would dare disturb them. But being groomed by the second, younger male was tricky. Their get-togethers greatly upset alpha, who regarded them as plots against himself and tried to disrupt them. Alpha would put up all his hair and hoot and display around, banging doors and hitting females, until the other two males became so nervous that they’d break up and leave the scene. Separating them was the only way to calm down alpha. Since male chimps never cease to jockey for position and are always making and breaking pacts, innocent grooming sessions don’t really exist. Every single one carries political implications.