What was the first "art"? How would we know? - PNAS

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What was the first "art"? How would we know? - PNAS
NEWS FEATURE

                                                                                                                                                                                               NEWS FEATURE
                                          What was the first “art”? How would we know?
                                          Recently discovered cave paintings and bone carvings offer new perspectives on long-held
                                          questions about art’s origins—not to mention the nature of art itself.
                                          Amy McDermott, Science Writer

                                          Archaeologist Adam Brumm recalls the moment in              Indonesia. Their notes to him that afternoon were
                                          late 2017 when his phone buzzed with a WhatsApp             nonchalant, Brumm recalls, along the lines of “Oh by
                                          message that included a rather astounding image:            the way, we found this spectacular cave painting.”
                                          three little pigs leaping across the limestone walls of     He was quickly scrolling through the messages on his
                                          Leang Tedongnge cave on the Indonesian island of            iPhone, when he saw the first images of the pigs flash
                                          Sulawesi.                                                   by on his screen. “I nearly had a heart attack,”
                                              It was a few months after the field season, and          Brumm says. “They were absolutely incredible. I
                                          Brumm sat in his office at Griffith University in Bris-       replied, at 3:58 pm: ‘Holy hell!!!!! Amazing pig
                                          bane, Australia. His field team had remained in              paintings!!!’” At least 45,500 years ago, a human

                                          Researchers believe this 45,500-year-old Indonesian cave painting, apparently of a pig, is the oldest known depiction of the animal world.
                                          It’s among several recently unearthed prehistoric images that are shedding new light on the dawn of art. Image credit: Maxime Aubert (Grif-
                                          fith University, Nathan QLD, Australia).
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                                          Published under the PNAS license.
                                          Published October 27, 2021.

                                          PNAS 2021 Vol. 118 No. 44 e2117561118                                                         https://doi.org/10.1073/pnas.2117561118   j   1 of 5
What was the first "art"? How would we know? - PNAS
And then there’s nonfigurative, or nonrepresenta-
                                                                                                                                   tional, expression. Examples abound in modern art,
                                                                                                                                   from Mark Rothko’s color blocks on canvas to Anne
                                                                                                                                   Truitt’s colorful minimalist pillars. The earliest abstract
                                                                                                                                   markings appear hundreds of thousands of years ear-
                                                                                                                                   lier than the Sulawesi pigs, when humans and other
                                                                                                                                   hominids began etching parallel lines, grids, and
                                                                                                                                   circles into shell and bone. But archaeologists dis-
                                                                                                                                   agree as to whether these are in fact the earliest
                                                                                                                                   glimmers of artistic expression.
                                                                                                                                       Recent discoveries of both figurative and abstract
                                                                                                                                   images, including 51,000-year-old etchings in bone
                                                                                                                                   made by Neanderthals in Germany, are prompting
                                                                                                                                   researchers and others to ask the question: When did
                                                                                                                                   art truly arise, and in what species? Adding to the
                                                                                                                                   archaeological evidence are modern day cognitive
                                                                                                                                   experiments using photographs of ancient line carv-
                                                                                                                                   ings. The work could help researchers recognize
                                                                                                                                   whether the carvings were originally intended as
                                                                                                                                   “art”—images and etchings purposefully created to
                                                                                                                                   stimulate the visual senses.
                                          The large limestone cave known as Leang Tedongnge is nestled in a valley on
                                          the Indonesian island of Sulawesi. The “three little pigs” painted there leap            By Hand and Firelight
                                          across a back wall in what appears to be a depiction of some social interaction,         “There’s a big problem in studying Paleolithic art, in
                                          perhaps mating or fighting. Image credit: Ratno Sardi (photographer).
                                                                                                                                   that we don’t know what art is,” confesses evolutionary
                                                                                                                                   cognitive archaeologist Dietrich Stout at Emory Univer-
                                                                        hand had painted the pigs in ochre, making them the        sity in Atlanta, GA. When amateur archaeologist Mar-
                                                                        oldest known examples of figurative art by at least         celino Sanz de Sautuola stumbled across the first
                                                                        several thousand years—and, by some standards, the         gallery of cave paintings at Altamira, Spain, a discovery
                                                                        oldest artwork in the world (1).                           he published in 1880, archaeologists assumed that the
                                                                            But which painting, drawing, or carving deserves       art was forged (2). Even decades later, when the paint-
                                                                        the superlative “oldest” is debatable. The moniker         ings were dated to a minimum of 13,500 years ago,
                                                                        depends, in part, on how archaeologists define art          Stout says that researchers didn’t spend much time on
                                                                        itself. The Sulawesi pigs are certainly the oldest known   definitions of art; the sense was, “you know it when
                                                                        figurative, or representational, art. That entails work     you see it.” Here were paintings requiring technical
                                                                        depicting objects from life, Brumm explains, such that     skill, a range of materials, and probably torchlight for
                                                                        an average observer would glance at the paintings          the artists to see while painting. And they looked like
                                                                        and recognize them as pigs rather than abstractions.       paintings a 19th century European gallery would dis-
                                                                        Representational art is common in art history, from        play, heavily favoring the figurative over the abstract.
                                                                        Greek Hellenistic marble goddesses to First Nations            All this suggested to early archaeologists that
                                                                        masks of killer whales and ravens in the Americas.         European cave painters must have been cognitively
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                                          This engraved giant deer bone, made by Neanderthals and found at a cave site in Germany, suggests that the origins of art are earlier than
                                          many contend. Image credit: Lower Saxony State Office for Cultural Heritage/Volker Minkus (photographer).

                                          2 of 5   j   PNAS                                                                                                                         McDermott
                                                       https://doi.org/10.1073/pnas.2117561118                                                    What was the first “art”? How would we know?
What was the first "art"? How would we know? - PNAS
fully modern, undergoing an abrupt leap from crude               One big challenge, Brumm says, is that most cave
                                          to relatively sophisticated, which allowed them to           paintings are difficult to date. In Indonesia, for exam-
                                          take images from the real world, held in the mind’s          ple, archaeologists first reported cave paintings in
                                          eye, and then create a physical representation of            the same region as Leang Tedongnge in the 1950s,
                                          those images by using lines on rock. Despite a lack of       created by blowing a mouthful of pigment around an
                                          direct evidence, archaeologists at the time assumed          outstretched hand, pressed to a cave wall. The
                                          these artists must have had all kinds of other               assumption until recently was that the hand stencils
                                          “modern” characteristics as well, such as language,          couldn’t be very old, Brumm says, because Indonesia
                                          culture, abstract thought, and religion, Stout               is so hot and humid. The paint should quickly erode.
                                          explains. Art, as those early archaeologists imagined            But in 2011, Brumm and colleagues noticed
                                          it, came out of a creative revolution coinciding with        popcorn-shaped growths formed over the top of
                                          the earliest European cave paintings, dated to about         some Indonesian paintings in limestone caves, which
                                          30,000 years ago at their oldest in Chauvet, France.         would have formed sometime after the paintings
                                              But these would turn out to be hasty conclu-             appeared. The growths turned out to be precipitated
                                          sions. “That’s a problematic concept,” Stout says,           calcite deposits, similar to stalactites, which build up
                                          noting that brain size hasn’t changed much for               in hundreds of hardened layers over centuries. By
                                          Homo sapiens in the last 500,000 years. Also,                measuring the ratio of uranium to a product of its
                                          plenty of modern cultures make both figurative                decay, thorium, Brumm and colleagues dated the
                                          and abstract art. So there’s no good reason to               oldest layers of the popcorn deposits. In 2014, his
                                          assume that European figurative artworks are evi-             team dated popcorns on a hand stencil to at least
                                          dence of a cognitive leap that enabled art-making,           40,000 years ago (3). The subsequent discovery of a
                                          as opposed to simply heralding the arrival of new            hunting scene in another Indonesian cave in 2019
                                          groups in Europe that showed up with representa-             pushed back the oldest figurative art to 43,900 years
                                          tional artistic skills. “I’d say the key point is that the   ago (4). And then, in 2017, Brumm’s team found the
                                          idea of a ‘revolution’ was an artifact of looking only       pigs and dated them to 45,500 years ago by using a
                                          at the archaeological record of Europe,” he says.            calcite deposit, making that work, published in 2021,
                                          Indications of migration in Europe had created an            so far, “the oldest representational painting in the
                                          impression of sudden revolutionary change, which             world,” Brumm says. The discoveries in Sulawesi
                                          is now known to be more gradual elsewhere.                   could imply that representational art began in Asia,
                                          “Around the world today we see lots of diversity in          but more likely, Brumm says, it’s just part of a trail of
                                          the expression of ‘art’ by modern Homo sapiens,”             representational art through human history. He
                                          he explains. “There is no real reason anymore to             expects the oldest rock art will eventually turn up
                                          see figurative art as a key indicator of a broader            from before Homo sapiens’ diaspora out of Africa.
                                          package of ‘modern’ traits.”
                                              Today, Stout sees several different camps in             Marks and Meaning
                                          archaeology, adhering to slightly different defini-           Other interpretations for what constitutes “art” could
                                          tions—all of which get to the heart of a decidedly           suggest a different origin story—one that doesn’t nec-
                                          modern-day conundrum: What is art? The most com-             essarily begin with our species. Evidence of abstract
                                          mon criterion for what’s considered art is behavior          images dates as far back as 500,000 years ago, when
                                          without any apparent practical use. Take the red pig-        Homo erectus etched zig zag lines into a seashell in
                                          ment ochre, for instance, which humans used to paint         Java (5). And just this year, archaeologist Dirk Leder dis-
                                          the Sulawesi pigs. The pigment, also found at older          covered 51,000-year-old abstract triple L-shaped pat-
                                          sites pre-dating figurative art, may have been used           terns carved in deer bone, placed between a cave bear
                                          artistically as face paint or other body ornamentation,      skull and two deer shoulder blades, in a Neanderthal
                                          but that’s hard to prove. Ochre also has practical           cave dwelling in Germany (6). Microscopy and CT scans
                                          uses, for example in processing animal hides. Still          revealed a three-dimensional picture of the bone in
                                          other archaeologists would like to see stronger evi-         which the engravings are precisely spaced, with cuts at
                                          dence that the art was actually intended to convey           neat angles, suggesting they were made deliberately
                                          some kind of aesthetic principle or meaning, Stout           rather than as accidental hacking marks from a tool. The
                                          notes. Beads, for instance, are decorative but can           carving’s estimated age of 51,000 years is based on
                                          also signal group identity. But again, it’s hard to rule     radiocarbon dating of collagen in the bone itself, which,
                                          out practical uses.                                          combined with tools characteristic of Neanderthals at
                                              Still, there are some growing areas of agreement.        the site, implies that it was made several thousand years
                                          The notion that modern human art began in Europe             before Homo sapiens arrived in Europe.
                                          some 40,000 years ago has been “a crumbling                      The takeaway is twofold, says Leder, who is at the
                                          edifice,” Brumm notes. The Sulawesi pigs firmly                Lower Saxony State Office for Cultural Heritage in
                                          usher it out; the figures are representational and pre-       Hanover, Germany. First, Neanderthals were capable
                                          date any equivalent figurative depiction in Europe            of constructing deliberate symbolic expressions, a
                                          easily by 5,000 years, he adds. And the pigs may not         notion that has been debated in the past. And sec-
                                          even be the oldest figurative art. Cave scenes of             ond, he says, art’s origins should be pushed back
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                                          hunter-gatherer life from India to China could possi-        “not just to 45,000 years ago, but a much longer
                                          bly be even older.                                           timeframe.” Leder expects that both Homo sapiens

                                          McDermott                                                                                                                           PNAS j 3 of 5
                                          What was the first “art”? How would we know?                                                              https://doi.org/10.1073/pnas.2117561118
What was the first "art"? How would we know? - PNAS
and Neanderthals were making expressive and com-           artifacts were easier to recall than older ones. How-
                                                                        municative carvings and drawings—even if not repre-        ever, in another set of experiments in the same study,
                                                                        sentational—off and on throughout their history, and       participants matched identical patterns as quickly as
                                                                        that although debate will likely continue, artistic        possible. Here, the researchers did not find meaningful
                                                                        expressions made by Neanderthals, and possibly even        differences in the discriminability of younger or older
                                                                        earlier hominins, will be recognized more and more.        patterns. “We should think about these scribbles as
                                                                            If Leder’s and others’ definitions of art seem sub-     proto-art,” Tylen says. “They were made to be pretty
                                                                        jective, they are. But cognitive scientists are now try-   and stimulate the visual system, more than to be com-
                                                                        ing to offer a more objective assessment by                municative signs that denote a particular meaning.”
                                                                        pinpointing the origins of symbolism—which some            Derek Hodgson, a neuro-archaeologist now semi-
                                                                        treat as a synonym for the origins of art itself. Some     retired from the University of York in England, had
                                                                        archaeologists argue that each scribble denotes            published a 2019 review proposing essentially the
                                                                        some meaning. A circle for instance, might mean            same conclusion (8). He suspects that the first inten-
                                                                        “horse,” although the shape looks nothing like the         tional markings, often parallel lines or crosses, resulted
                                                                        animal. Others see the carvings as aesthetically inter-    from a bias in the visual cortex, in which neurons are
                                                                        esting, but otherwise meaningless, decorations.            particularly sensitive to horizontal and vertical lines. If
                                                                            To help resolve the debate, cognitive scientist        the marks had greater symbolic meaning, Hodgson
                                                                        Kristian Tylen, at Aarhus University in Denmark, col-     adds, he would expect to see more variation between
                                                                        laborated with archaeologists beginning in 2017,           them from one culture to the next, just as languages
                                                                        with a resulting study published in 2020, using up-to-     vary. But instead, the earliest grids, V-shapes, and lines
                                                                        100,000-year-old abstract carvings from South Afri-        turn up in a limited number of configurations around
                                                                        ca’s Blombos cave and other sites to probe the             the world, suggesting to Hodgson that they were visu-
                                                                        beginnings of symbolic behavior (7). Tyl   en and col-    ally interesting but not explicitly meaningful.
                                                                        laborators designed a series of cognitive experiments          Hodgson’s theory, however, was met with swift dis-
                                                                        for modern-day human subjects, testing, for instance,      agreement in a 2019 paper by archaeologist Francesco
                                                                        how memorable and how discriminable each carved            d’Errico and collaborators (9). D’Errico pointed out that
                                                                        pattern is. If there were some adaptive pressure to        he’d used functional magnetic resonance imaging
                                                                        make patterns mean specific things over time, for           (fMRI) in a prior study to identify the brain areas stimu-
                                                                        instance evolving from simple grids into pictograms        lated by a variety of images, including 540,000- to
                                                                        or words, archaeologists would expect the patterns         30,000-year-old engravings, as well as landscapes,
                                                                        to become more memorable and easier to tell apart          objects, words with no meaning in alphabetic writing,
                                                                        over thousands of years.                                   and fragments of Linear B ancient writing systems, as
                                                                            The researchers showed subjects the ancient            well as the scrambled versions of all these stimuli (10).
                                                                        engravings, for instance flashing the images on a mon-      D’Errico and coauthors found that the scrambled ver-
                                                                        itor for a few seconds and then asking participants to     sions of all the stimuli were processed in participants’
                                                                        redraw the pattern they’d just seen from memory.           primary visual cortexes, indicating simple visual percep-
                                                                        Consistent with the evolution of symbolism, younger        tion without further processing by the brain. But the
                                                                                                                                   engravings activated brain regions in a similar pattern
                                                                                                                                   to how objects are perceived, suggesting that they are
                                                                                                                                   processed as organized visual representations and may
                                                                                                                                   have been used to attach symbolic meaning.
                                                                                                                                       One limitation of modern studies is that they use
                                                                                                                                   modern human subjects. In d’Errico’s work, for exam-
                                                                                                                                   ple, modern brain activity in areas associated with
                                                                                                                                   complex forms is interpreted as evidence of symbolic
                                                                                                                                   meaning thousands of years ago. “The problem is,
                                                                                                                                   modern humans have learned to read and write, so we
                                                                                                                                   have highly symbolic ability attached to that area of
                                                                                                                                   the brain,” Hodgson says. Whether that brain area
                                                                                                                                   behaved similarly before people had written language
                                                                                                                                   is impossible to tell, he adds. D’Errico plans to address
                                                                                                                                   the limitation of working with modern humans in forth-
                                                                                                                                   coming unpublished work, by comparing patterns of
                                                                                                                                   brain activity in archaeologists to those of non-experts.
                                                                                                                                   Both the experts and non-experts will look at a collec-
                                          In their 2020 study, Tyl
                                                                  en and collaborators showed modern participants engrav-          tion of real engravings and unintentional, natural mark-
                                          ing patterns, or “experimental stimuli,” distilled from the original outlines of         ings that look like engravings. The archaeologists
                                          engravings on rock artifacts that were made over a period of 30,000 years.               should quickly spot the unintentional markings by
                                          Younger artifacts had more attention-grabbing, intentional, and memorable
                                                                                                                                   using a motor area of the brain that remembers the
                                          patterns than older ones, but they did not necessarily contain more distinguish-
                                          able patterns. Reprinted from ref. 7. Photographic materials adapted from refs.          hand motions required to make a real carving. Com-
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                                          11 and 12, with permission from Elsevier. Original outlines reproduced from ref.         paring the responses in the brains of modern experts
                                          13, with permission from Cambridge University Press.                                     with those in the brains of modern non-experts is fairer,

                                          4 of 5   j   PNAS                                                                                                                         McDermott
                                                       https://doi.org/10.1073/pnas.2117561118                                                    What was the first “art”? How would we know?
d’Errico says, than using the response of modern par-                and which specific research questions they’re asking.
                                          ticipants to infer symbolic meaning in the past.                     The conceit that abstract art is primitive, and then
                                               On the phone from the University of Bordeaux in                 evolved into representational art, seems increasingly
                                          France, d’Errico is careful to note that “art is a very              flawed. Tyl  en, for his part, suspects that abstract art and
                                          ambiguous notion.” He, Tyl     en, Hodgson, and their               figurative work such as the Sulawesi pigs could have
                                          collaborators are not explicitly debating the dawn of                independent origins. In Europe, some Paleolithic animal
                                          art, per se. Rather, they’re arguing over the emer-                  figurines, which appear after the dawn of representa-
                                          gence and evolution of symbolic material culture.                    tional art, are decorated with abstract engravings similar
                                          The San of the Kalahari use hatch marks to denote,                   to much older patterns. That suggests two simultaneous
                                          as one example, ownerships of their arrows. And                      forms of expression: One that’s purely aesthetic and
                                          although those markings have a symbolic role, the                    abstract, and one that’s symbolic, representational, and
                                          San would consider them to be craftsmanship, not                     perhaps requires more complex cognition.
                                          art. Still, when symbolism emerged is a relevant                         Looking ahead, the Sulawesi pigs may not be the
                                          question to art’s beginnings, as some archaeologists                 oldest figurative art for long. Brumm is now applying
                                          argue that images must be symbolic to be artistic.                   for funding to explore the islands between Sulawesi
                                               D’Errico personally does not subscribe to that                  and Papua Indonesia, following the path of those who
                                          view. Symbolism and art aren’t necessarily related,                  first migrated down the Indonesian island chain and
                                          he says. Even if researchers arrive at some agreement                onto the northern tip of Australia some 65,000 years
                                          on the definition of symbolism, they’d still be hard                  ago. “We hope to find earlier rock art in these unex-
                                          pressed to reach a consensus on the definition of art                 plored islands east of Sulawesi,” Brumm says. If paint-
                                          itself—and such a consensus could still deviate from                 ings there are indeed as old as the first inhabitants of
                                          the beliefs of the artists themselves. For his part,                 Australia, it would suggest that wayfarers have carried
                                          without proof that a given society had an indepen-                   artistic expression for at least twice as long as some
                                          dent role for the artist, d’Errico would be hesitant to              19th- and 20th-century archaeologists had thought.
                                          say that group made “art” per se. “I think art begins                    It’s these big questions—and historical revi-
                                          in a society when someone gets a societal role as art-               sions—that are piquing the interest of archaeolo-
                                          ist, independent of what they’re producing,” he says.                gists and others. “It’s one of the biggest questions
                                          “The society is recognizing someone has special                      in archaeology,” Brumm says. “When did our
                                          training and taste that others cannot do.”                           ancestors or close relatives start to produce mark-
                                               So when was the earliest art? The answer depends                ings or forms on the continuum of art, and why did
                                          on which definition of art an archaeologist adheres to                they do it?”

                                           1 A. Brumm et al., Oldest cave art found in Sulawesi. Sci. Adv. 7, eabd4648 (2021).
                                           2 P. M. Gray, “Cave art and the evolution of the human mind,” Master’s thesis, Victoria University of Wellington, Wellington, New
                                             Zealand (2010).
                                           3 M. Aubert et al., Pleistocene cave art from Sulawesi, Indonesia. Nature 514, 223–227 (2014).
                                           4 M. Aubert et al., Earliest hunting scene in prehistoric art. Nature 576, 442–445 (2019).
                                           5 J. C. A. Joordens et al., Homo erectus at Trinil on Java used shells for tool production and engraving. Nature 518, 228–231 (2015).
                                           6 D. Leder et al., A 51,000-year-old engraved bone reveals Neanderthals’ capacity for symbolic behaviour. Nat. Ecol. Evol. 5,
                                             1273–1282 (2021).
                                           7 K. Tyl
                                                   en et al., The evolution of early symbolic behavior in Homo sapiens. Proc. Natl. Acad. Sci. U.S.A. 117, 4578–4584 (2020).
                                           8 D. Hodgson, The origin, significance, and development of the earliest geometric patterns in the archaeological record. J. Archaeol.
                                             Sci. Rep. 24, 588–592 (2019).
                                           9 E. Mellet, I. Colag e, A. Bender, C. S. Henshilwood, What processes sparked off symbolic representations? A reply to Hodgson and
                                             an alternative perspective. J. Archaeol. Sci. Rep. 28, 102043 (2019).
                                          10 E. Mellet et al., Neuroimaging supports the representational nature of the earliest human engravings. R. Soc. Open Sci. 6, 190086
                                             (2019).
                                          11 C. S. Henshilwood, F. d'Errico, I. Watts, Engraved ochres from the middle stone age levels at Blombos Cave, South Africa. J. Hum.
                                             Evol. 57, 27–47 (2009).
                                          12 P.-J. Texier et al., The context, form and significance of the MSA engraved ostrich eggshell collection from Diepkloof Rock Shelter,
                                             Western Cape, South Africa. J. Archaeol. Sci. 40, 3412–3431 (2013).
                                          13 D. Hodgson, Decoding the Blombos engravings, shell beads and Diepkloof ostrich eggshell patterns. Camb. Archaeol. J. 24,
                                             57–69 (2014).
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                                          McDermott                                                                                                                                        PNAS j 5 of 5
                                          What was the first “art”? How would we know?                                                                           https://doi.org/10.1073/pnas.2117561118
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