Colleran, Heidi Linguistic and Cultural Evolution, Max Planck Institute for the Science of Human History, Max Planck Society;
https://www.cambridge.org/core/journals/behavioral-and-brain-sciences/article/are-both-necessity-and-opportunity-the-mothers-of-innovations/7788E166DCAAA6E015DCFCB2EEA6E4D1/share/a5525c8b316414f72d37d34aa7093d6d5f80d464 (Publisher version)
Greenbaum, G., Fogarty, L., Colleran, H., Berger-Tal, O., Kolodny, O., & Creanza, N. (2019). Are both necessity and opportunity the mothers of innovations? Behavioral and Brain Sciences, 42: e199. doi:10.1017/S0140525X19000207.