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Foragers and Their Tools: Risk, Technology and Complexity.

Kim Sterelny1

  • 1School of Philosophy, RSSS, Australian National University.

Topics in Cognitive Science
|July 22, 2021
PubMed
Summary

Forager subsistence technologies vary due to environmental factors, not just risk. Seasonal environments favor complex tools by reducing costs and increasing resource predictability, challenging risk-based explanations.

Keywords:
Desert foragersForager toolkitsLatitudinal gradient in technological complexityMeasuring subsistence riskRisk and technical complexityVariation in forager toolkits

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Area of Science:

  • Archaeology
  • Anthropology
  • Environmental Science

Background:

  • Forager subsistence technologies exhibit significant spatial and temporal variation.
  • Existing literature often links technological complexity to subsistence failure risk.

Purpose of the Study:

  • To review causal factors of technological variation in forager communities.
  • To critically analyze the risk-based hypothesis for complex technologies.
  • To propose an alternative explanation for technological diversity.

Main Methods:

  • Literature review of causal factors in forager technology.
  • Analysis of the risk-based hypothesis and its empirical support.
  • Development of an alternative model based on environmental seasonality and resource predictability.

Main Results:

  • The risk-based hypothesis is challenged by dubious risk proxies and counterexamples like desert foragers.
  • Reduced opportunity costs in seasonal environments favor complex technologies.
  • High-value, predictable resources in seasonal environments support complex toolkits.

Conclusions:

  • Environmental seasonality and resource characteristics offer a more robust explanation for forager technological variation.
  • Future research should consider environmental variation's role in long-term toolkit evolution.