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Goods Are Different: Rival, Excludable, Divisible

Why It Matters

Fairness principles applicable to divisible excludable goods (money) often fail for indivisible rival goods (organ transplants) or non-rival goods (knowledge). Applying the wrong distributive mechanism to the wrong type of good generates systematic failures.

The Key Move

Before proposing a distribution mechanism, classify the good: Rival or non-rival? Excludable or non-excludable? Divisible or lumpy? Different cells in this space require different allocation approaches.

Classic Application

Public goods (non-rival, non-excludable) cannot be fairly distributed by markets - no one will pay if they can free-ride. Requires taxation or alternative mechanisms. Classic market distribution works for rival, excludable, divisible goods.

Surprising Application

Attention and recognition in organizations. Recognition is non-rival (my praising you doesn't reduce praise available for others) but often treated as rival ("don't over-praise or it loses meaning"). This category error creates artificial scarcity.

Failure Modes

  • Treating non-rival goods as scarce (artificial scarcity in information)
  • Ignoring lumpiness and attempting continuous division (can't split indivisible goods fairly)
  • Assuming all goods fit cleanly into categories when many are mixed
  • Applying market mechanisms to non-excludable goods (undersupply)

Go Deeper

Ostrom, "Governing the Commons" on common-pool resources; Benkler, "The Wealth of Networks" on non-rival information goods.