Language is often described as the sine-qua-non or the most important and distinguishing characteristic of a culture or civilisation

Language is often described as the sine-qua-non or the most important and distinguishing characteristic of a culture or civilisation. There has been a the consistent relationship between the level of advancement of a society and the complexity and development of its language. In fact, one may say that civilisation or for that matter the very idea of knowledge is closely intertwined with language.
Scientists interested in the study of the evolution of behaviour of societies point out that there are four distinct features which have made the human organism distinctly superior to the highest evolved sub-human organisms like the chimpanzee. These are, attainment of an erect posture, the growth of the cerebral cortex and its complexity, the prolonged period of socialisation, and finally the acquisition of advanced and complex linguistic capacities and abilities.
Language is often described as the sine-qua-non or the most important and distinguishing characteristic of a culture or civilisation. There has been a the consistent relationship between the level of advancement of a society and the complexity and development of its language. In fact, one may say that civilisation or for that matter the very idea of knowledge is closely intertwined with language.
Scientists interested in the study of the evolution of behaviour of societies point out that there are four distinct features which have made the human organism distinctly superior to the highest evolved sub-human organisms like the chimpanzee. These are, attainment of an erect posture, the growth of the cerebral cortex and its complexity, the prolonged period of socialisation, and finally the acquisition of advanced and complex linguistic capacities and abilities.
This verbal language has come to engulf our lives in every sphere and today one cannot think of advances or development in any sphere of life without the involvement of language. Thus, human society has evolved music as a language, the numerical system as a language, dance as a language, Morse code and today a variety of computer languages.

Nature of Language:

Language is essentially a set of signs and symbols which have certain fixed meanings, evolved in each society. It is this fixed denotation which makes languages so essential and crucial.
The signs or symbols may be sounds, words, light signals, gestures, facial expressions, geometrical signs, and body postures. These signs can be verbal or non-verbal, visual or auditory, animate or inanimate. Thus a traffic light is an inanimate visual sign.
The telephone bell is an inanimate and auditory symbol while the expression of a dancer is a visual and animate symbol. When you get up to interrupt your teacher while he is teaching, he makes a gesture and you sit down. This is visual and animate. Thus, we see that when we talk of a language, it is just not the mere verbal language that we mean though that represents the most complex and advanced from of language behaviour.
It is obvious that any language can develop only in a society or social context. So, the nature of the society and social interactions play a very crucial role in determining several aspects of language, particularly the linguistic form of language. This is true both at a collective level, the evolution of a language, and also at the level of an individual, the acquisition of language abilities.
Of course, there is a view that certain forms of language structure are universal and innate and that even some animals exhibit some sort of language behaviour. But, even if there are innate and universal language structures, it is undeniable that verbal language is very much a product of social life interaction and social evolution.
It is estimated that human beings have used some form or the other of a spoken language for more than a million years or even three million years. However, written language is estimated to be only about 7,000 years old. This latter perhaps is an underestimation, and even written laThis clearly shows that language behaviour in a spoken or written form has been very closely associated with the whole evolution of human societies. Languages appears to have played a very crucial role in social evolution, the emergence of civilisation and unfolding of social life in all its aspects including social degeneration.
If an individual who lived in this world a million years ago and who was speaking some language of his period were to come alive again, he will be amazed at the complexity of modern languages. Perhaps, he will not be able to recognise them as languages. Thus, modern languages have become much more complex, complicated, rich in vocabulary and above all show variance from one language to another, some with a long vocabulary. Idioms and sentences are combinations and re-combinations of a limited number of basic sound units called phonemics corresponding to vowels and sentences though not exactly the same.
The number of basic phonemics used by different languages in the world are limited and range between 15 to 85, the English language using about 45 such phonemics. Combination of these phonemics in different ways and manners leads to the formation of morphemes which some linguists compare to words though morphemes are not exactly similar to words and certainly not identical.
It is sometimes estimated that a very highly educated individual learns to recognise about 1, 00,000 morphemes out of the basic 45 phonemics the average being around 10,000. A few studies by Templin and Irwin have shown that there are very wide individual variations depending on socio-economic status, educational background, intelligence, availability of learning opportunities, etc.
A number of other factors also seem to contribute to these variations. Thus, we may see how fantastic languages are in that, though their basic units are limited, their combinations in various ways have resulted in the generation of unlimited number of morphemes. We may thus say that language is an open system, even mild variations in the intonations of these phonemics can result in new morphemes.

Evolution of Language:

One observation which has been engaging the attention of life scientists including psychologists is that many of the activities which we see at the human level are also seen in the behaviour of sub-human organisms. This interest is a direct result of the Darwinian theory of evolution.