Experimentation preceding innovation in a MIS5 Pre-Still Bay layer from Diepkloof Rock Shelter (South Africa): emerging technologies and symbols

In southern Africa, key technologies and symbolic behaviors develop as early as the later Middle Stone Age in MIS5. These innovations arise independently in various places, contexts and forms, until their full expression during the Still Bay and the Howiesons Poort. The Middle Stone Age sequence from Diepkloof Rock Shelter, on the West Coast of the region, preserves archaeological proxies that help unravelling the cultural processes at work. This unit yields one of the oldest abstract engraving so far discovered in Africa, in the form of a rhomboid marking on the cortical surface of an ungulate long bone shaft. The comprehensive analysis of the lithic artefacts and ochre pieces found in association with the engraved bone documents the transport of rocks over long distance (>20km), the heat treatment of silcrete, the coexistence of seven lithic reduction strategies (including the production of bladelets and the manufacture of unifacial and bifacial points), the use of adhesives and the processing of ochre. At Diepkloof, the appearance of engraving practices take place in a context that demonstrates a shift in rock procurement and a diversification in lithic reduction strategies, suggesting that these behavioral practices acted as a cultural answer to cope with new environmental and/or socio-economic circumstances. We argue that the innovations later found during the Still Bay and the Howiesons Poort were already in the making during the MIS5 pre-Still Bay, though not all the benefits were yet taken advantage of by the populations.

‘I Can Do It’ Becomes ‘We Do It’: Kimberley (Australia) and Still Bay (South Africa) Points Through a Socio-technical Framework Lens

Building on the body of work regarding the concepts of invention and innovation in lithic technology, we further explore the give-and-take relationship between people and their technologies in two different stone point knapping traditions. From the socio-technical framework perspective, which is one amongst many ways to look at technological trends, the acceptance and stabilisation of a tool-making tradition is not only dictated by its technology-specific properties, such as its ingenuity or usefulness. Instead, it also depends on the social conventions and practices of its spatiotemporal context, which can be explored through the notions of introduction, closure, stabilisation, destabilisation and copying. We explain the theory behind the socio-technical framework with modern examples, such as bicycle use in late nineteenth century England and electrical guitar trends in the last half of the twentieth century. Turning our attention to stone point knapping, we use Australian Kimberley point production during the late nineteenth and twentieth centuries to bridge into how the socio-technical framework reflects in the dynamics that might be involved in lithic traditions. Using this theoretical framework to think about aspects of deep-time point production, such as that recorded from the Still Bay techno-complex during the Middle Stone Age in southern Africa, becomes trickier though. Instead of reliable ethno-historical accounts or dense archaeological context, we have to rely on coarse-grained data sets about distribution, age, environment and population, making inferences more speculative and less testable. In the context of this special volume, we suggest, however, that a socio-technical framework approach may be a useful tool to enhance our thinking about dynamics in ancient techno-behaviours and that more work is necessary to flesh out its potential in this respect.