It’s a small but genuine annoyance. I’ll be listening some “expert,” often a professor, being interviewed for a radio show or podcast. If the idea of cognition comes up, they’ll state as a fact that humans are far more intelligent than any other animal on the planet. And, almost inevitably, one piece of evidence they’ll point to is communication. There’s the assumed inability of other animals to communicate with as much sophistication as we do.
Now, they might be right about these things, though obviously we’d need to define intelligence and communication to even establish a working hypotheses. What irritates me, though, is the certainty with which they make their claims. In truth, we just don’t know how we stack up in the animal kingdom because we still live in such a deep state of ignorance about our fellow creatures.
The Talking Drums
When I hear such claims, I sometimes think about the talking drums. For hundreds of years, certain African cultures were able to communicate effectively across vast distances. They did this right beneath the noses and within the hearing of ignorant, superior-feeling Europeans.
In his book The Information, James Gleick lays out the story of the talking drums in Chapter One. Via drums, certain African peoples were able to quickly communicate detailed and nuanced messages over long distances well before Europeans acquired comparable technologies. At least as far back as the 1700s, these African peoples were able to relay messages from village to village, messages that “could rumble a hundred miles or more in a matter of an hour…. Here was a messaging system that outpaced the best couriers, the fastest horses on good roads with say stations and relays.”
It was only in the 19th century that the missionary Roger T. Clarke recognized that “the signals represent the tones of the syllables of conventional phrases of a traditional and highly poetic character.” Because many African languages are tonal in the same way Chinese is, the pitch is crucial in determining the meaning of a particular word. What the drums allowed these peoples to do was communicate complex messages using tones rather than vowels or consonants.
Using low tones, the drummer communicates through the phrases and pauses. Extra phrases are added to each short “word” beaten on the drums. These extra phrases would be be redundant in speech, but they can provide context to the core drum signal.
The technology and innovativeness of the talking drums is amazing, of course, but what’s especially startling is the centuries-long depth of European ignorance about the technology. Even once some Europeans admitted that actual information was being communicated across vast distances, they could not fathom how.
Why? Sure, racism no doubt played a part. But the larger truth is that they simply didn’t have enough information and wisdom to figure it out. That is despite the fact that we are talking about members of the same species and, indeed, a species with very little genetic diversity.
Here’s how the Smithsonian Institution reports on this lack of diversity:
[C]ompared with many other mammalian species, humans are genetically far less diverse – a counterintuitive finding, given our large population and worldwide distribution. For example, the subspecies of the chimpanzee that lives just in central Africa, Pan troglodytes troglodytes, has higher levels of diversity than do humans globally, and the genetic differentiation between the western (P. t. verus) and central (P. t. troglodytes) subspecies of chimpanzees is much greater than that between human populations.
On average, any two members of our species differ at about 1 in 1,000 DNA base pairs (0.1%). This suggests that we’re a relatively new species and that at one time our entire population was very small, at around 10,000 or so breeding individuals.
For Europeans to remain so ignorant about a technology created by other members of their own barely diversified species tells us how truly awful we are at understanding the communication capabilities of others. Now add in the exponentially higher levels of genetic diversity between species. For example, the last known common ancestor between whales and human existed about 97 million years ago. How about the last known ancestor between birds and humans? About 300 million years ago.
These timescales represent enormous genetic chasms that we are not remotely capable of bridging at the moment. We are still in the dark ages of understanding animal cognition and communication. So far, our most successful way of communicating with other animals is by teaching them our languages. So now we have chimpanzees using sign language and parrots imitating our speech patterns. African Grey parrots, for example, can learn up to 1,000 words that they can use in context.
Yet, when these species do not use human language as well as humans, we consider them inferior.
If We’re So Bloody Bright…
But if we as a species are so intelligent, why aren’t we using their means of communication? I’m not suggesting that other animals use words, symbols and grammar the way humans do. But communicate they do. I live in Florida, which is basically a suburbanized rainforest, and have become familiar with the calls of various birds, tropical and otherwise. One of the more common local denizens is the fish crow. I hear crows that are perched blocks away from one another do calls and responses. The calls vary considerably even to my ignorant, human ears, and there are probably countless nuances I’m missing.
Are they speaking a “language”? I don’t know, but it seems highly unlikely they’re expending all the vocal and cognitive energy for no reason. Their vocalizations mean something, even if we can’t grasp what.
Inevitably, humans think all animal communication is about food, sex and territory. But that’s just a guess on our part. We assume that their vocalizations are otherwise meaningless just as many Europeans assumed the talking drums were mostly meaningless noise. In short, we’re human-centric bigots.
Consider the songs of the humpback whales. These are extremely complex vocalizations that can be registered over vast distances. Indeed, scientists estimate that whales’ low frequency sounds can travel up to 10,000 miles! Yet, we’re only guessing about why males engage in such “songs.” For all we know, they’re passing along arcane mathematical conceits that would put our human Fields Medal winners to shame.
On Human Ignorance
The point is that we continue to live in a state of deep ignorance when it comes to other our fellow creatures. That’s okay as long as we remain humble, but we humility is not what people do best. We assume we are far more intelligent and/or far better communicators than are other species.
Yet, consider the counterevidence. Just look the various environmental, political and even nuclear crises in which we conflict-loving primates are so dangerously enmeshed. It hardly seems like intelligence. Maybe the whales and parrots are really discussing what incapable morons humans are compared to themselves. With that, mind you, it would be hard to argue.
Featured image from Mplanetech. 11 January 2017