“…More so, in both the red-berry and forestry scenarios we described above, as well as in Locke and Panchanthanan and Boyd's formulation of normative conflict, individuals clearly vary in terms of what norms they wish to see characterize their groups. Normative conflict may erupt around normative goal-seeking and such conflict has been a source of both pro-social (Keyssar, 2009) and regressive or anti-social normative change (Bello, 2019), playing a key role in social evolution during the Holocene of the past ≈ 12, 000 years. For example, shifting backwards in time, it has characterized the Leveller and Digger movements in 17 th century England (Rees, 2017;Wood, 2017), the Guild movements of medieval Europe (Ogilvie, 2021), efforts by the Roman plebs seeking release from debt obligations to the patricians and more well-established legal rights (Forsythe, 2005), and even collective labor action by Egyptian scribes in 12 th century BCE (Edgerton, 1951).…”