Gona in the Afar region of Ethiopia has yielded the earliest Oldowan stone tools in the world. Artefacts from the East Gona (EG) 10 site date back 2.6 million years. Analysis of the lithic assemblage from EG 10 reveals the earliest-known evidence for refitting and conjoining stone artefacts. This new information supplements data from other Oldowan sites in East Africa, and provides an important insight into the technological capacities and evolutionary development of hominins during this period.

The goal of this study was to identify cognitive processes in a particular technical subsystem – flint blade debitage in the Linear Pottery Culture (Linearbandkeramik or LBK, dating to the second half of the sixth millennium BC). The study was based on new archaeological data from pits with debitage waste on a site at Verlaine, near Liège in Belgian Hesbaye. The project mainly involved refitting and analysis of a concentration of blade debitage waste, which had been almost completely preserved; an exceptional situation for this period. This detailed analysis has produced new data for the early Neolithic on the mental conception and technical procedures involved in debitage of large blocks of flint and suggests that the evidence from Verlaine reflects a system of ‘surplus’ production. The objective of Neolithic knappers at Verlaine was clearly to surpass the needs of the local communities, with a view to long-distance distribution well outside the region.