The subsistence technology of forager communities has varied greatly over space and time. This paper (i) reviews briefly the main causal factors the literature identifies as responsible for this variation; (ii) analyzes in some detail the most prominent idea in the literature on spatial variation:Complex technology is an adaptive response to elevated risks of subsistence failure; (iii) it argues that the alleged empirical support for this hypothesis depends on dubious proxies of risk; (iv) it argues that it fails to explain (...) the subsistence technologies of desert foragers, who generally live with simple technologies in high‐risk environments; (v) it offers an alternative analysis, based on the reduced opportunity costs of complex technologies in highly seasonal environments, on the high value of typical forager targets in those environments and their relatively predictable location in space and time; and (v) the paper concludes with a conjecture about the role of environmental variation in toolkit change over deep time. (shrink)

Kinship plays a foundational role in organizing human social behavior on both local and more global scales. Hence, any adequate account of the evolution of human sociality must include an account of the evolution of human kinship. This article aims to make progress on the latter task by providing a few key pieces of an evolutionary model of kinship systems. The article is especially focused on the connection between primate social cognition and the origins of kinship systems. I argue that (...) early conceptions of kinship in our line were very likely scaffolded by preexisting forms of primate social cognition. It was only later, as linguistic resources increased in our line, and as human social life grew more complex, that these conceptions came to resemble kin categories as we now know them. I conclude by situating “kin cognition” within a broader cognitive science framework for studying capacities that reflect both innate knowledge and human cultural learning. (shrink)

This paper introduces a Special Issue of Topoi entitled "Archaeology and philosophy".