Gert Jan Hofstede (1956) is professor of Artificial Sociality at Wageningen University in the Netherlands. He works on agent-based models of sociality, often in the context of socio-technical or socio-ecological systems. Gert Jan co-authored some famous books on national culture with his father Geert, and published widely on simulation games. His Silico Centre Wageningen runs summer schools on agent-based modelling. Gert Jan’s background as a population- and behavioural biologist is visible in his foundational way of looking at human social behaviour, using generic theory.