Tragedy of the Commons
Garrett Hardin · "The Tragedy of the Commons" (Science, 1968) (1968)
When a resource is held in common, each individual has an incentive to exploit it for personal gain, leading to overuse and depletion, even when that outcome is in no one’s long-term interest.
Core Concepts
The Problem
Shared, unregulated resources are prone to overconsumption because individuals capture the full benefit of exploitation while spreading the cost among all users.
The Claim
Without private property rights or effective regulation, rational self-interest can inadvertently destroy a shared resource.
Key Evidence
- •Overfishing of international waters
- •Deforestation of unowned land
- •Overgrazing on common pastures
- •Pollution of air and water
- •Unregulated sand mining
Practical Implication
Solutions include privatization, government regulation, or community-based management under conditions identified by Elinor Ostrom.
Nuance & Limits
Elinor Ostrom’s work demonstrated that communities can successfully manage common-pool resources without full privatization or top-down control when they have clear boundaries, collective decision-making, and effective monitoring.
Source Material
Citation Density
very high, foundational across multiple disciplines
Gaps
- ⚠ Ostrom’s design principles for successful commons management
- ⚠ How the tragedy of the commons interacts with enforcement and path dependence
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