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352 pages, Hardcover
First published September 21, 2017
As far back as the work of psychologist Kurt Goldstein in the early twentieth century, researchers have denied that there are language-exclusive cognitive disorders. The absence of such disorders would seem to suggest that language emerges from the individual and not merely from language-specific regions of the brain. And this in turn supports the claim that language is not a relatively recent development, say 50–100,000 years old, possessed exclusively by Homo sapiens. My research suggests that language began with Homo erectus more than one million years ago, and has existed for 60,000 generations.
Homo sapiens means ‘wise man’, and suggests, erroneously as we see, that modern humans (we are all Homo sapiens) are the only wise or intelligent humans. We are almost certainly the smartest. But we are not the only smart humans who ever lived.Erectus also invented the other pillar of human cognition: culture. Who we are today was partially forged by the intelligence, travels, trials and strength of Homo erectus. This is worth stating because too many sapiens fail to reflect on the importance of earlier humans to who we are today.
Languages’ similarities are not rooted in a special genetics for language. They follow from culture and common information-processing solutions and have their own individual evolutionary stories.
But each language satisfies the human need to communicate. While many people in today’s world are tempted to spend more time on social media than perhaps they should, it is the pull of linguistic intercourse that is mainly driving them there. No matter how busy some are, it is hard for them to avoid entering into some ‘conversation’ on the screen in front of them to opine on issues about which they often know little and care less.
Language is the handmaiden of culture.
But what is an invention? It is a creation of culture. Edison alone did not invent the light bulb; he needed Franklin’s work in electricity nearly 200 years before him. No one person invents anything. Everyone is part of a culture and part of each other’s creativity, ideas, earlier attempts and the general world of knowledge in which they live. Every invention is built up over time, bit by bit. Language is no exception.
Conversations are the apex of linguistic studies and sources of insight particularly because they are potentially open-ended in meaning and form. They are also crucial to understanding the nature of language because of their ‘underdeterminacy’ – saying less than what is intended to be communicated and leaving the unspoken assumptions to be figured out by the hearer in some way. Underdeterminacy has always been part of language.
Based on the evidence of Homo erectus culture, such as their tools, houses, village spatial organisation and ocean travel to imagined lands beyond the horizon, the genus Homo has been talking for some 60,000 generations – quite possibly more than one and a half million years
Underdeterminacy means that every utterance in every conversation and every line in every novel and each sentence of any speech contains ‘blank spots’ – unspoken, assumed knowledge, values, roles and emotions – underdetermined content that I label ‘dark matter’.
Language can never be understood entirely without a shared, internalised set of values, social structures and knowledge relationships. In these shared cultural and psychological components, language filters what is communicated, guiding a hearer’s interpretations of what another is saying.
One proposal I discard is arguably the most influential explanation of the origin of human language of all time. This is the idea that language resulted from a single genetic mutation some 50–100,000 years ago. This mutation supposedly enabled Homo sapiens to build complex sentences. This is the set of ideas known as universal grammar. But a very different hypothesis emerges from a careful examination of the evidence for the biological and cultural evolution of our species, namely the sign progression theory of language origin.
The evidence shows that there was no ‘sudden leap’ to the uniquely human features of language, but that our predecessor species in the genus Homo and earlier, perhaps among the australopithecines, slowly but surely progressed until humans achieved language. This slow march taken by early hominins resulted eventually in a yawning evolutionary chasm between human language and other animal communication.
Language is a gestalt – the whole is greater than the sum of its parts. That is to say, the whole is not understood merely by examining its individual components.