From cave walls to keyboards: 'emoji' were first used 200,000 years ago

Humans have been using symbols to communicate and convey emotion since the Stone Age

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What is an emoji? We often think of these cute little characters as a way to add a graphic element to a tweet or Facebook post, but these simple images are powerful symbols. Emoji are, in fact, compact characters that, because of their visual nature, can communicate an amazing amount of information, such as the subtleties of human emotion.

It's not just emoji: we use this type of graphic communication constantly in our daily lives - everything from a stop sign to the Christian cross - all are methods for conveying information (sometimes quite complex) using simple abstract shapes. The reason this works is that, as a society, we have created agreed upon meanings for these symbols. So when we see one, we instantly know how to interpret it, without even thinking.

And we certainly can't forget about symbolic systems such as the written word or computer coding. You could make a pretty good argument that the making of graphic marks underpins the foundation of modern society. But what people don't often think about is how long ago this practice was invented, or that if you go back far enough, you will reach a point in our prehistory where this ability did not yet exist. This time is known as the Paleolithic, or Stone Age.

The Paleolithic was a time of great innovation on many fronts - new tools, new technologies, new territories and, of course, a new species, Homo sapiens, that appeared for the first time on the African landscape about 200,000 years ago. And although these distant ancestors were similar to us in terms of physical appearance and brain size, what we don't know is when they started thinking like us. Because when it comes to brains, it's not just the size; it's also the wiring. In this case, the wiring that allowed the development of cognitive abilities such as abstract thought and imagination. But how do you study something soft like the brain that doesn't survive long in the archaeological record? The answer is indirectly, through abstract activities such as the creation of art.

Associated with the first arrival of modern humans in Europe and dating to between about 10,000 and 40,000 years ago, the (Ice Age) cave art of Paleolithic Europe is some of the oldest in the world. This art is probably best known from sites such as Chauvet in France, with its masterful black horse and rhino paintings, or Altamira in Spain, with its famous ceiling of bison.

These painted and engraved animal images account for the majority of figurative art (works that look like something from the real world), along with a smaller number of human representations. And then there are a large number of non-figurative (abstract) images, known as geometric signs. These include everything from dots and lines to circles and triangles. At many sites these signs outnumber the animals and humans - and yet they have not received the same amount of attention as their figurative counterparts.1

This is now starting to change, and the results are intriguing. As described in my book, The First Signs, the most startling discovery is how few types of these signs there are. Barring a handful of one-offs, there are 32 main geometric signs used throughout the late Paleolithic in Europe.2

Considering this spans 30,000 years of prehistory and an entire continent, it's a very low number. And they're not all being used in the same way - each sign has a distinctive pattern of use - making it unlikely that these were doodles or random decorations. For example, negative hands (those that were stencilled as opposed to having paint applied on them) appear at fewer than 20 per cent of 
sites and they are at their most popular in the early part of that time period - between 20,000 and 40,000 years ago - before fading out of use towards the end of the Ice Age.3

On the other hand, we have a sign such as the tectiform ("roof-shaped" in Latin), which only appears in the Dordogne region of France between 13,000 and 17,000 years ago. Unlike other signs that tend to move across the landscape, the tectiform seems to have been a local invention and may have "belonged" to the people in that region (some researchers suggest it is a clan sign). Except, that is, for one site 400km across the Pyrenees in Spain. This is the site of Fuente del Trucho in the Huesca province, and here too we find the same tectiform shape made in the same manner.4

So how did it find its way from the Dordogne to this one other site - but none in between? It may be that this sign either moved with people (say, through intermarriage) or there could have been trading between these groups. We know there were already extensive trade networks in place during the Ice Age in Europe - everything from flint to exotic goods like amber or obsidian - so it would make sense that they also sometimes traded ideas or cultural information.

Even simple signs such as lines or dots appear less than 75 per cent of the time, suggesting that each sign on a cave wall had a known meaning within that cultural group and was being purposefully selected by the artist. We're not talking about writing yet - there are just not enough characters at this point to fully represent a spoken language the way early writing systems like Egyptian hieroglyphs or Sumerian cuneiform could (and alphabets don't come around until even later), nor is it organised enough. However, the repetition and patterns we're seeing with the signs tells us that there was definitely some sort of typology in place.

This is the kind of experimentation with visual marks that paved the way for the development of writing - and, more recently, the creation of modern symbols, including emoji. Those signs from Ice-Age Europe may well have been part of one of the oldest systems of graphic communication in the world, as well as being the precursors to those cute little symbols on your phone.

Genevieve von Petzinger is a paleoanthropologist and author of The First Signs: Unlocking the Mysteries of the World's Oldest Symbols*(Atria Books)*

\1. Some important exceptions to this oversight include the work of French scholars such as Andre Leroi-Gourhan and Georges Sauvet, who did recognise the potential of the geometric signs; A. Leroi-Gourhan (1992) L'art Pariétal. Langage de la Préhistoire. Paris: Jérômee Millon; G Sauvet (1993). L'art pariétal Paléolithique. GRAPP: Techniques et Méthodes d'étude. Éd. du CTHS.

\2. G von Petzinger (2016). The First Signs: Unlocking the Mysteries of the World's Oldest Symbols (Atria Books).

\3. G von Petzinger and A Nowell (2011). A Question of Style: reconsidering the Stylistic Approach to 
Dating Paleolithic Parietal Art in France. Antiquity, vol 85.

\4. S Ripoll; V Baldellou; F Munoz, P Ayuso (2001). La Fuente del Trucho. Bolskan 18: 211-224.

This article was originally published by WIRED UK