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Chance, explanation, and causation in evolutionary theory.

Jean Gayon1

  • 1Université Paris 1-Panthéon Sorbonne, Institut d'histoire et de philosophie des sciences et des techniques, 13, rue du Four, 75005 Paris, France.

History and Philosophy of the Life Sciences
|August 11, 2006
PubMed
Summary

Chance in evolutionary theory is complex, with three distinct meanings: luck, randomness, and contingency. Understanding these concepts is crucial for a unified evolutionary explanation.

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Area of Science:

  • Evolutionary biology
  • Philosophy of science

Background:

  • The role of chance in evolutionary processes is multifaceted and lacks a unified definition.
  • Understanding chance is critical for explaining evolutionary mechanisms from micro to macro levels.

Observation:

  • Chance operates at various evolutionary scales: mutations, genetic drift, genetic revolutions, ecosystems, and macroevolution.
  • Three primary concepts of chance are identified: popular notion of luck, probabilistic randomness, and epistemological contingency.
  • The study examines the applicability of these concepts to different evolutionary levels.

Findings:

  • The paper clarifies the distinct meanings of chance across evolutionary theory.
  • It identifies luck, randomness, and contingency as key concepts of chance.

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  • The analysis questions the reducibility of these concepts and their objective or subjective nature.

    • Implications:

    • A clearer understanding of chance enhances the explanatory power of evolutionary theory.
    • This work contributes to the philosophical debate on randomness and determinism in biology.
    • It provides a framework for future research into the nature of chance in evolution.