 Faced with this proliferation of options, several theorists have espoused “no magic bullet” positions, holding that there is unlikely to be any single, crucial psychological advance that will turn out to be the pivotal cognitive ingredient needed for cumulative culture. Rather, they argue, the gap between human and non-human capacities for culture will likely flow from small changes and minor increases in the functionality of several psychological mechanisms that are shared between species, along with new interactions that emerge between those and with other ecological and social factors (Sterelny 2012; J. Henrich 2016; Laland &amp; Seed 2021; also see Ross 2019).