The Kekulé Problem – Cormac McCarthy

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Illustration by Don Kilpatrick III

Cormac McCarthy is best known to the world as a writer of novels. These include Blood Meridian, All the Pretty Horses, No Country for Old Men, and The Road. At the Santa Fe Institute (SFI) he is a research colleague and thought of in complementary terms. An aficionado on subjects ranging from the history of mathematics, philosophical arguments relating to the status of quantum mechanics as a causal theory, comparative evidence bearing on non-human intelligence, and the nature of the conscious and unconscious mind. At SFI we have been searching for the expression of these scientific interests in his novels and we maintain a furtive tally of their covert manifestations and demonstrations in his prose.

Over the last two decades Cormac and I have been discussing the puzzles and paradoxes of the unconscious mind. Foremost among them, the fact that the very recent and “uniquely” human capability of near infinite expressive power arising through a combinatorial grammar is built on the foundations of a far more ancient animal brain. How have these two evolutionary systems become reconciled? Cormac expresses this tension as the deep suspicion, perhaps even contempt, that the primeval unconscious feels toward the upstart, conscious language. In this article Cormac explores this idea through processes of dream and infection. It is a discerning and wide-ranging exploration of ideas and challenges that our research community has only recently dared to start addressing through complexity science.

—David Krakauer President and William H. Miller Professor of Complex Systems, Santa Fe Institute

I call it the Kekulé Problem because among the myriad instances of scientific problems solved in the sleep of the inquirer Kekulé’s is probably the best known. He was trying to arrive at the configuration of the benzene molecule and not making much progress when he fell asleep in front of the fire and had his famous dream of a snake coiled in a hoop with its tail in its mouth—the ouroboros of mythology—and woke exclaiming to himself: “It’s a ring. The molecule is in the form of a ring.” Well. The problem of course—not Kekulé’s but ours—is that since the unconscious understands language perfectly well or it would not understand the problem in the first place, why doesnt it simply answer Kekulé’s question with something like: “Kekulé, it’s a bloody ring.” To which our scientist might respond: “Okay. Got it. Thanks.”

Why the snake? That is, why is the unconscious so loathe to speak to us? Why the images, metaphors, pictures? Why the dreams, for that matter.

A logical place to begin would be to define what the unconscious is in the first place. To do this we have to set aside the jargon of modern psychology and get back to biology. The unconscious is a biological system before it is anything else. To put it as pithily as possibly—and as accurately—the unconscious is a machine for operating an animal.

All animals have an unconscious. If they didnt they would be plants. We may sometimes credit ours with duties it doesnt actually perform. Systems at a certain level of necessity may require their own mechanics of governance. Breathing, for instance, is not controlled by the unconscious but by the pons and the medulla oblongata, two systems located in the brainstem. Except of course in the case of cetaceans, who have to breathe when they come up for air. An autonomous system wouldnt work here. The first dolphin anesthetized on an operating table simply died. (How do they sleep? With half of their brain alternately.) But the duties of the unconscious are beyond counting. Everything from scratching an itch to solving math problems.

Did language meet some need? No. The other five thousand plus mammals among us do fine without it.

Problems in general are often well posed in terms of language and language remains a handy tool for explaining them. But the actual process of thinking—in any discipline—is largely an unconscious affair. Language can be used to sum up some point at which one has arrived—a sort of milepost—so as to gain a fresh starting point. But if you believe that you actually use language in the solving of problems I wish that you would write to me and tell me how you go about it.

I’ve pointed out to some of my mathematical friends that the unconscious appears to be better at math than they are. My friend George Zweig calls this the Night Shift. Bear in mind that the unconscious has no pencil or notepad and certainly no eraser. That it does solve problems in mathematics is indisputable. How does it go about it? When I’ve suggested to my friends that it may well do it without using numbers, most of them thought—after a while—that this was a possibility. How, we dont know. Just as we dont know how it is that we manage to talk. If I am talking to you then I can hardly be crafting at the same time the sentences that are to follow what I am now saying. I am totally occupied in talking to you. Nor can some part of my mind be assembling these sentences and then saying them to me so that I can repeat them. Aside from the fact that I am busy this would be to evoke an endless regress. The truth is that there is a process here to which we have no access. It is a mystery opaque to total blackness.

There are influential persons among us—of whom a bit more a bit later—who claim to believe that language is a totally evolutionary process. That it has somehow appeared in the brain in a primitive form and then grown to usefulness. Somewhat like vision, perhaps. But vision we now know is traceable to perhaps as many as a dozen quite independent evolutionary histories. Tempting material for the teleologists. These stories apparently begin with a crude organ capable of perceiving light where any occlusion could well suggest a predator. Which actually makes it an excellent scenario for Darwinian selection. It may be that the influential persons imagine all mammals waiting for language to appear. I dont know. But all indications are that language has appeared only once and in one species only. Among whom it then spread with considerable speed.

There are a number of examples of signaling in the animal world that might be taken for a proto-language. Chipmunks—among other species—have one alarm-call for aerial predators and another for those on the ground. Hawks as distinct from foxes or cats. Very useful. But what is missing here is the central idea of language—that one thing can be another thing. It is the idea that Helen Keller suddenly understood at the well. That the sign for water was not simply what you did to get a glass of water. It was the glass of water. It was in fact the water in the glass. This in the play The Miracle Worker. Not a dry eye in the house.

The invention of language was understood at once to be incredibly useful. Again, it seems to have spread through the species almost instantaneously. The immediate problem would seem to have been that there were more things to name than sounds to name them with. Language appears to have originated in southwestern Africa and it may even be that the clicks in the Khoisan languages—to include Sandawe and Hadza—are an atavistic remnant of addressing this need for a greater variety of sounds. The vocal problems were eventually handled evolutionarily—and apparently in fairly short order—by turning our throat over largely to the manufacture of speech. Not without cost, as it turns out. The larynx has moved down in the throat in such a way as to make us as a species highly vulnerable to choking on our food—a not uncommon cause of death. It’s also left us as the only mammal incapable of swallowing and vocalizing at the same time.

The sort of isolation that gave us tall and short and light and dark and other variations in our species was no protection against the advance of language. It crossed mountains and oceans as if they werent there. Did it meet some need? No. The other five thousand plus mammals among us do fine without it. But useful? Oh yes. We might further point out that when it arrived it had no place to go. The brain was not expecting it and had made no plans for its arrival. It simply invaded those areas of the brain that were the least dedicated. I suggested once in conversation at the Santa Fe Institute that language had acted very much like a parasitic invasion and David Krakauer—our president—said that the same idea had occurred to him. Which pleased me a good deal because David is very smart. This is not to say of course that the human brain was not in any way structured for the reception of language. Where else would it go? If nothing else we have the evidence of history. The difference between the history of a virus and that of language is that the virus has arrived by way of Darwinian selection and language has not. The virus comes nicely machined. Offer it up. Turn it slightly. Push it in. Click. Nice fit. But the scrap heap will be found to contain any number of viruses that did not fit.

There is no selection at work in the evolution of language because language is not a biological system and because there is only one of them. The ur-language of linguistic origin out of which all languages have evolved.

Influential persons will by now of course have smiled to themselves at the ill-concealed Lamarckianism lurking here. We might think to evade it by various strategies or redefinitions but probably without much success. Darwin of course was dismissive of the idea of inherited “mutilations”—the issue of cutting off the tails of dogs for instance. But the inheritance of ideas remains something of a sticky issue. It is difficult to see them as anything other than acquired. How the unconscious goes about its work is not so much poorly understood as not understood at all. It is an area pretty much ignored by the artificial intelligence studies, which seem mostly devoted to analytics and to the question of whether the brain is like a computer. They have decided that it’s not, but that is not altogether true.

Of the known characteristics of the unconscious its persistence is among the most notable. Everyone is familiar with repetitive dreams. Here the unconscious may well be imagined to have more than one voice: He’s not getting it, is he? No. He’s pretty thick. What do you want to do? I dont know. Do you want to try using his mother? His mother is dead. What difference does that make?

To put it as pithily as possibly—and as accurately—the unconscious is a machine for operating an animal.

What is at work here? And how does the unconscious know we’re not getting it? What doesnt it know? It’s hard to escape the conclusion that the unconscious is laboring under a moral compulsion to educate us. (Moral compulsion? Is he serious?)

The evolution of language would begin with the names of things. After that would come descriptions of these things and descriptions of what they do. The growth of languages into their present shape and form—their syntax and grammar—has a universality that suggests a common rule. The rule is that languages have followed their own requirements. The rule is that they are charged with describing the world. There is nothing else to describe.

All very quickly. There are no languages whose form is in a state of development. And their forms are all basically the same.

We dont know what the unconscious is or where it is or how it got there—wherever there might be. Recent animal brain studies showing outsized cerebellums in some pretty smart species are suggestive. That facts about the world are in themselves capable of shaping the brain is slowly becoming accepted. Does the unconscious only get these facts from us, or does it have the same access to our sensorium that we have? You can do whatever you like with the us and the our and the we. I did. At some point the mind must grammaticize facts and convert them to narratives. The facts of the world do not for the