There are several sources from which knowledge about language constitution and its subsequent evolution can be derived: historic evidence, anthropological research, cognitive modeling, cultural evaluation, linguistics, and archaeology. Here is a quote from one of the better (though not uncontroversial) books on the subject: Language "enabled man to achieve a form of social organization whose range and complexity was different in kind from that of animals: whereas the social organization of animals was mainly instinctive and genetically transmitted, that of man was largely learned and transmitted verbally through the cultural heritage," (cf. Jack Goody and Ian Watt, The Consequence of Literacy). The general idea pertaining to the social implications of language is restrictive but acceptable. What is not at all explained here is how language comes into existence, and why instinctive and genetically transmitted organization (of animals) would not suffice, or even be tantamount to the verbally transmitted organization of human beings. As a matter of fact, language, as perceived in the text cited and elsewhere in literature, becomes merely a storing device, not a formative instrument, a working tool of sorts, even a tool for making other tools and for evaluating them.
Languages have to be understood in a much broader perspective. Like humans, languages have an evolution in time. What came before language can be identified. What remains after a certain language disappears (and we know of some that have disappeared) are elements as important as the language itself for our better understanding of what makes language necessary. The disappearance of a language also helps us realize how the life of a language takes place through the life of those who made it initially possible, afterwards necessary, and finally replaced it with means more appropriate to their practical life and to their ever-changing condition. Research into pre-linguistic time (I refer to anthropological, archaeological, and genetic research) has focused on items people used in primitive forms of work. It convincingly suggests that before a relatively stable and repetitive structure was in place, people used sounds, gestures, and body expressions (face, hands, legs) pretty much the way infants do. The human lineage, in its constitutive phases, left behind a wealth of testimony to patterns of action and, later, to behavioral codes that result in some sense of cohesion. Distant forebears developed patterns in obtaining food and adapting to changes affecting the availability of food and shelter.
Before words, tools probably embodied both potential action and communication. Many scholars believe that tools are not possible without, or before, words. They claim that cognitive processes leading to the manufacture of tools, and to the tool-making human being (Homo Faber), are based on language. In the opinion of these scholars, tools extend the arm, and thus embody a level of generality not accessible otherwise than through language. It might well be that nature-based "notation" (footprints, bite marks, and the stone chips that some researchers believe were the actual tools) preceded language. Such notation was more in extension of the biological reality of the human being, and corresponded to a cognitive state, as well as to a scale of existence, preparing for the emergence of language.
Research on emerging writing systems (the work of Scribner and Cole, for instance, and moreover the work of Harald Haarmann, who considers the origins of writing in the notations found at Vinca, in the Balkans, near present-day Belgrade) has allowed us to understand how patterns of sounds and gestures became graphic representations; and how, once writing was established, new human experiences, at a larger scale of work, became possible. Finally, the lesson drawn from dying languages (Rosch's studies of Dyirbal, reported by Lakoff) is a lesson in the foundation of such languages and their demise. What we learn from these is less about grammar and phonetics and more about a type of human experience. We also acquire information regarding the supporting biological structure of those involved in it, the role of the scale of humankind, and how this scale changes due to a multitude of conjectures.
The differentiation introduced above among pre-language notations, emerging languages, emerging systems of writing, and dying languages is simultaneously a differentiation of kinds and types of human expression, interaction, and interpretation of everything humans use to acknowledge their reality in the world they live in. Drawing attention to oneself or to others does not require language. Sounds suffice; gestures can add to the intended signal. In every sound and in every gesture, humans project themselves in some way. Individuality is preserved through a sound's pitch, timbre, volume, and duration; a gesture can be slow or rapid, timid or aggressive, or a mixture of these characteristics. Once the same sound, or the same gesture, or the same sequence of sounds and gestures is used to point to the same thing, this stabilized expression becomes what can be defined, in retrospect, as a sign.
Semeion revisited
Interest in various sign systems used by humans reaches well back to ancient times. But it was only after renewed interest in semiotics-the discipline dealing with signs (semeion is the Greek word for sign)-that researchers from various other disciplines started looking at signs and their use by humans. The reason for this is to be found in the fast growth of expression and communication based on means other than natural language. Interaction between humans and increasingly complex machines also prompted a great deal of this interest.
Language-oral and written-is probably the most complex system of signs that researchers are aware of. Although the word language comprises experiences in other sign systems, it is by no means their synthesis. Before the practical experience of language, humans constituted themselves in experiences of simpler means of expression and communication: sounds, rhythms, gestures, drawings, ritualized movement, and all kinds of marks. The process can be seen as one of progressive projection of the individual onto the environment of existence. The sign I of one's own individuality-as distinct from other I's with whom interaction took place through competition, cooperation, or hostility-is most likely the first one can conjure. It must be simultaneous with the sign of the other, since I can be defined only in relation to something different, i.e., to the other. In the world of the different, some entities were dangerous or threatening, others accommodating, others cooperating. These qualifiers could not be simply translated into identifiers. They were actually projections of the subject as it perceived and understood, or misunderstood, the environment.
To support my thesis about the pragmatic nature of language and literacy, a short account of the pre-verbal stage needs to be attempted here. Very many scholars have tried to discover the origin of language. It is a subject as fascinating as the origins of the universe and the origin of life itself. My interest is rather in the area of the nature of language, the origin being an implicit theme, and the circumstances of its origination. I have already referred to what are loosely called tools and to behavioral codes (sexual, or relating to shelter, food-gathering, etc.). There is historic evidence that can be considered for such an account, and there are quite a number of facts related to conditions of living (changes in climate, extinction of some animals and plants, etc.) that affect this stage. The remaining information is comprised of inferences based on how beings similar to what we believe human beings once were constituted their signs as an expression of their identity. These signs reflected the outside world, but moreover expressed awareness of the world made possible by the human's own biological condition.
The very first sentence of the once famous Port-Royal Grammar unequivocally considers speaking as an explanation of our thoughts by signs invented for this particular purpose. The same text makes thinking independent of words or any kind of signs. I take the position that the transition from nature to culture, i.e., from reactions caused by natural stimuli to reflections and awareness, is marked by both continuity and discontinuity. The continuous aspect refers to the biological structure projected into the universe of interactions with similar or dissimilar entities. The discontinuity results from biological changes in brain size, vertical posture, functions of the hands. The pre- verbal (or pre-discursive) is immediate by its very nature. The discursive, which makes possible the manifest thought (one among many kinds) is mediated by the signs of language. Closeness to the natural environment is definitive of this stage. Although I am rather suspicious of claims made by contemporary advocates of the psychedelic, in particular McKenna, I can see how everything affecting the biological potential of the being (in this case psilocybin, influencing vision and group behavior) deserves at least consideration when we approach the subject of language.