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Evolutionary games and computer simulations

B A Huberman1, N S Glance

  • 1Dynamics of Computation Group, Xerox Palo Alto Research Center, CA 94304.

Proceedings of the National Academy of Sciences of the United States of America
|August 15, 1993
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Digital simulations of the Prisoner's Dilemma may not accurately reflect real-world cooperation. Differences in space-time granularity between simulations and reality can significantly alter outcomes, particularly regarding territoriality and cooperation.

Area of Science:

  • Game Theory
  • Computational Social Science
  • Evolutionary Biology

Background:

  • The Prisoner's Dilemma is a foundational model for understanding cooperation among self-interested agents.
  • Previous research has utilized laboratory experiments, analytical methods, and computer simulations to study cooperation.
  • Discrepancies exist between digital simulations and real-world experimental systems.

Purpose of the Study:

  • To investigate the impact of simulation methodologies on the study of cooperation.
  • To assess whether cellular automata-type simulations accurately represent social systems.
  • To determine if space-time granularity in simulations compromises their real-world applicability.

Main Methods:

  • Comparison of digital simulations with real-world experimental observations.

Related Experiment Videos

  • Analysis of cellular automata simulations with varying space-time granularities.
  • Examination of how discrete versus continuous time affects simulation outcomes.

    • Main Results:

    • Significant differences were observed between digital simulations and real-world cooperation dynamics.
    • Space-time granularity in simulations, particularly discrete time, can markedly alter results.
    • Simulation outcomes for territoriality and cooperation diverge substantially based on time representation.

    Conclusions:

    • Cellular automata-type simulations with imposed space-time granularity may not reliably inform the study of cooperation in social systems.
    • The choice of discrete versus continuous time in simulations is critical and can lead to divergent conclusions.
    • Researchers must carefully consider the methodological limitations of digital simulations when inferring real-world cooperation behaviors.