Nature study: policies that spread cooperation concentrate benefits among the well-connected
arjunrajlab · x · 2026-10-04
A Nature paper led by Anzhi Sheng in Joshua Plotkin's group at Penn examines how public goods allocation rules trade off cooperation against equality.
Key findings:
- The study compares equitable allocation (returns proportional to potential contributions) with uniform allocation (everyone gets equal shares)
- On most social networks, uniform allocation spreads cooperation more effectively than equitable allocation
- However, policies that promote cooperation tend to concentrate benefits among well-connected individuals
- Conclusion: structured societies must weigh collective success against the inequality it generates
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