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Research Article

Cultivation of cereals by the first farmers was not more productive than foraging

Samuel Bowles
  1. Santa Fe Institute, Santa Fe, NM, 87501; and University of Siena, Siena 53100, Italy

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PNAS first published March 7, 2011; https://doi.org/10.1073/pnas.1010733108
Samuel Bowles
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  • For correspondence: bowles@santafe.edu
  1. Edited* by Henry T. Wright, University of Michigan, Ann Arbor, MI, and approved February 2, 2011 (received for review July 26, 2010)

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Abstract

Did foragers become farmers because cultivation of crops was simply a better way to make a living? If so, what is arguably the greatest ever revolution in human livelihoods is readily explained. To answer the question, I estimate the caloric returns per hour of labor devoted to foraging wild species and cultivating the cereals exploited by the first farmers, using data on foragers and land-abundant hand-tool farmers in the ethnographic and historical record, as well as archaeological evidence. A convincing answer must account not only for the work of foraging and cultivation but also for storage, processing, and other indirect labor, and for the costs associated with the delayed nature of agricultural production and the greater exposure to risk of those whose livelihoods depended on a few cultivars rather than a larger number of wild species. Notwithstanding the considerable uncertainty to which these estimates inevitably are subject, the evidence is inconsistent with the hypothesis that the productivity of the first farmers exceeded that of early Holocene foragers. Social and demographic aspects of farming, rather than its productivity, may have been essential to its emergence and spread. Prominent among these aspects may have been the contribution of farming to population growth and to military prowess, both promoting the spread of farming as a livelihood.

  • labor productivity
  • technological change
  • time discount
  • certainty equivalent

Footnotes

  • Author contributions: S.B. designed research, performed research, analyzed data, and wrote the paper.

  • The author declares no conflict of interest.

  • ↵*This Direct Submission article had a prearranged editor.

  • This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1010733108/-/DCSupplemental.

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Cultivation of cereals by the first farmers was not more productive than foraging
Samuel Bowles
Proceedings of the National Academy of Sciences Mar 2011, 201010733; DOI: 10.1073/pnas.1010733108

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Cultivation of cereals by the first farmers was not more productive than foraging
Samuel Bowles
Proceedings of the National Academy of Sciences Mar 2011, 201010733; DOI: 10.1073/pnas.1010733108
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