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Related Experiment Video

Updated: Jul 19, 2025

Precise, High-throughput Analysis of Bacterial Growth

Precise, High-throughput Analysis of Bacterial Growth

Published on: September 19, 2017

Stable cooperation emerges in stochastic multiplicative growth.

Lorenzo Fant^1,2, Onofrio Mazzarisi³, Emanuele Panizon⁴

¹International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy.

Physical Review. E

|August 16, 2023

Summary

Cooperation can emerge and remain stable even with environmental fluctuations. Sharing resources as a public good benefits individuals by mitigating risks from unpredictable changes, especially over long periods.

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Area of Science:

Evolutionary biology
Game theory
Behavioral economics

Background:

Cooperation is crucial across many disciplines, but its stability against exploitation remains a challenge.
Few mechanisms ensure cooperation's robustness to cheating and environmental variability.

Purpose of the Study:

To introduce a novel mechanism for cooperation's emergence and stability.
To investigate cooperation under stochastic wealth fluctuations and long-time horizons.

Main Methods:

Agent-based modeling with stochastic multiplicative wealth changes.
Analysis of resource sharing as a public good.
Examination of individual-level benefits under fluctuating environments.

Main Results:

Cooperation emerges and is evolutionarily stable despite environmental fluctuations.
Sharing resources as a public good provides individual advantages.
Long-time horizons amplify the benefits of cooperation in screening against environmental risks.

Conclusions:

Environmental fluctuations do not preclude cooperation; they can even promote it.
Cooperation offers an adaptive strategy for individuals facing stochasticity.
This mechanism provides a new perspective on the stability of cooperation in diverse systems.