Rabbi Michael Leo Samuel

According to Rashi (1040-1105), one of humanity’s chief distinctions from the animal world lies in its unique ability to formulate speech in expressing ideas about itself, the world, and God. As proof, Rashi cites the Aramaic translation (Targum) of Onkelos (2nd cent. c.e.), who paraphrases the verse to mean: וַהֲוָת בְאָדָם לְרֻוחַ מְמַלְלָא “and it became within man, a speaking spirit,” as if to say humanity represents the most evolved of all created entities, for humankind alone was granted the power of understanding and speech.

These traditional interpretations regarding the human capacity for complex and abstract speech raise important questions in light of our contemporary knowledge of zoology, comparative linguistics, anthropology, and neuroscience. Simply put, how unique is the human capacity to speak and communicate through language? Is human language the by-product of a long evolutionary history, or is it more the result of spontaneous development that is unique to people?

There is a large scientific interdisciplinary debate about the nature of human communication going back to the time of Darwin, who originally theorized that human language is simply an evolved form of communication, no different in principle from the grunts, gestures, and calls generated by other non-human species. Darwin posits, “I cannot doubt that language owes its origin to the imitation and modification of various natural sounds, the voices of other animals, and man’s own instinctive cries, aided by signs and gestures.”[1] While natural selection argues for a gradualist account for language, the appearance of organized language makes its mysterious but spontaneous appearance only in humankind. Until the 20^th century, the origin of language remained a forbidden topic in certain academic circles, probably because of its highly speculative nature.[2]

Still and all, some linguistic scholars like Noam Chomsky reject the Darwinian idea that language could have evolved by natural selection. Chomsky asserts that the human language instinct is fundamentally incompatible with the modern Darwinian theory of evolution, in which complex biological systems arise by gradual accumulation over generations of random genetic mutations that enhance reproductive success. As such, language is a skill limited strictly to humans, who are the sole possessors of the cognitive hardware which makes language possible.

Chomsky contends that human language is radically different from primate communication and draws attention to the incredible ease with which children learn to communicate (as opposed to learning, for instance, mathematics) far beyond the intellectual capacity of their years.[3] Such ability is actually hardwired within the brain itself, which enables it to grasp the words along with its grammar, intuitively knowing how to make symbolic sense of the words that are spoken. Chomsky refers to this mental faculty as the “Language Acquisition Device” or simply “LAD.” The child’s innate ability to acquire the grammar necessary for a language can best be explained only if one assumes that all grammars are variations of a single, generic “universal grammar,” which is a cross-cultural phenomenon that reveals how all human brains come “with a built-in language organ that contains this language blueprint.” He postulates that there is an “organ” within the brain that enables it to effortlessly learn the meaning of symbolic language. It is this “instinct” or “innate facility” that makes human language unique.

Among modern linguists, M.I.T. Professor Steven Pinker offers one of the most controversial theories about human language in his book, The Language Instinct.[4] While Pinker is sympathetic to many of Chomsky’s original insights regarding the uniqueness of human language, he also sides with the Darwinian view that the brain’s innate grammatical abilities are not necessarily incompatible with natural selection and mutation. He writes, “There must have been a series of steps leading from no language at all to language as we now find it, each step small enough to have been produced by random mutation of genes and with each intermediate grammar being useful to its possessor.”[5]

One could argue that once a person defines language from a purely human perspective, other forms of non-human language are at a disadvantage from the start. It is perhaps more relevant to ask ourselves, how do animal species communicate with one another? Or, can human beings, for example, train primates to understand or speak human language? If in fact, the understanding of symbols is a vital prerequisite to the development of language, then, is the phenomenon of syntax, as Chomsky argues, the most important defining feature that is exclusive to human language?

Some scientists, like primatologist Sue Savage-Rumbaugh, contend that certain species of primates are capable of developing a basic sense of syntax. She offers an altogether different approach to the relationship of animals and language, through the use of lexigrams and computer-based keyboards, the same kind of technology that is used for children and adults with language deficits. With this method, each lexigram or symbol represents a word; however, a symbol is not necessarily characteristic of the words it represents. Remarkably, the information gathered at the center regarding the primates’ abilities to acquire symbols, comprehend spoken words, decode simple syntactical structures, learn concepts of number and quantity, and perform complex perceptual-motor tasks have revolutionized the way scientists understand primate communication. [6] Other researchers have also managed to teach gorillas how to utilize sign language.[7]

Studies with the African Grey Parrot, named “Alex,” have been studied for the past thirty years by animal psychologist Irene Pepperberg, initially at the University of Arizona and later at Harvard and Brandeis University. Prior to her studies, most scientists believed that birds were only capable of mimicking human speech, but were incapable of using words creatively. According to Pepperberg, birds actually possess a capacity to reason and utilize words in expressing themselves and can even count! Alex’s intelligence is believed to have been comparable to that of dolphins and great apes, if not that of a five-year-old human child. Had it not died prematurely because of illness, it might have developed an even greater capacity to express itself through human language.[8]

Marine biologists have also discovered that the humpback whales’ songs continue to change as the season progresses. The New Year’s song will start off where last year’s song has ended, providing evidence of an enormous memory capacity. As the season progresses, the song will gradually change. New pieces will be added while other sections will be dropped. One whale may carry a note a bit longer than another whale, but the structure and components are the same. One recent study points out that their language sophistication is so great, that some whales seem to sing in different dialects depending on their place of origin. For example, blue whales off the Pacific Northwest sound differently from blue whales in the western Pacific, which sound differently from those living off of Antarctica. Moreover, they all sound differently from the blue whales living near Chile. Whales in the eastern Pacific are purported to emit lower-pitched sounds followed by a tone, while other whale populations use a different variety of pulses, tones, and pitches. Perhaps the regional differences in their tones are similar to the distinctions between French and Italian, or are variations of the regional accents found in this country. In addition, whales even have a grasp of grammar whenever they communicate with one another.[9]

The implications of these studies are as far reaching as they are practical. By studying how non-human species participate in language, we will, in the process, better understand more about the nature of human learning, since many of the same principles are involved. The more knowledge we gain from this process will also help to effectively communicate and teach people who have communication disorders, besides expanding our understanding of the creatures that co-inhabit our world with us. In any event, with the ever-growing expansion of human knowledge in our day, we ought to humbly acknowledge the words of the Psalmist who exclaimed ages ago:

• מָה־רַבּוּ מַעֲשֶׂיךָ יְהוָה כֻּלָּם בְּחָכְמָה עָשִׂיתָ מָלְאָה הָאָרֶץ קִנְיָנֶךָ

How manifold are your works, Lord!

You have made them all with wisdom;

The earth is full of your creatures

(Psalm 104:24).