“…Some comparative figures can provide insightful contexts. The authors of a recent study of more than 1600 silo pits dating from the Early Neolithic-Late Iron Age from 172 sites in northeastern Spain demonstrate a chronological increase in storage capacity by calculating the range of volumes in the central 50% of pit volumes (Prats, Antolín, and Alonso 2020b). They find that 50% of pits in the Early Neolithic range between 319 and 677 L. By the Early Bronze Age, this has increased to between 540 and 1362 L, and by the Late Bronze Age to between 1320 and 2719 L. The authors argue that the figures, when combined with data on settlements, agricultural systems, and technology, show that, whereas surplus production was uncommon in the Neolithic, Bronze Age domestic units were customarily producing and storing surpluses (Prats, Antolín, and Alonso 2020b, 21).…”