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- W2065136332 abstract "A mong the stimulating issues raised by Smith I take up three. First, he notes parallels in a conception of time allocation to subsistence and expectations from evolutionary ecology. I argue that the differences are fundamental and usefully emphasized. Second, he disputes assumptions made in Hawkes, O'Connell, Hill and Charnov (HOHC) about the shape of fitness return curves, then adopts other curves without justifying the assumptions implicit in them. I suggest that this obscures the fact that such return curves might take any shape at all, that the shape they take depends on underlying assumptions (explicit or otherwise), and that the appropriate curves for a specific empirical problem depend on the empirical characteristics of the problem. Third, he points out the importance of the opportunity costs of foraging, criticizing HOHC for underestimating these effects. This is a telling point, one that has become increasingly central in work done in the 5 years since HOHC was written. I agree that these opportunity costs are as important as foraging returns for explaining time allocation. (1) Smith argues, in opposition to HOHC that the limited-needs view is not necessarily inconsistent with the theory of natural selection or models of optimal foraging (pp. 73-85). As HOHC noted, there are similarities in some of the predictions of opportunity-cost models and predictions from limited needs, but Smith himself points out (as we did not) that even these predictions are not actually identical. More to the point, Smith does not comment on the fundamental distinction between the classic limited-needs view and the perspective of evolutionary ecology. This distinction rests on whether adjustments toward an optimum are expected at all. As Marshall Sahlins (1969, pp. 29-30), the most influential architect of that classic view, has said:" @default.
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- W2065136332 date "1987-01-01" @default.
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- W2065136332 title "Limited needs and hunter-gatherer time allocation" @default.
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- W2065136332 doi "https://doi.org/10.1016/0162-3095(87)90060-4" @default.
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