The Shared Discovery Paradox: sharing info helps individuals but hurts the group

natesiggard · x · 2026-10-05

Yohei Nakajima published The Shared Discovery Paradox, illustrated with a simple math game: sharing information without coordinating actions makes each individual's decisions better-informed but lowers the group's expected payoff, as everyone rushes toward the same already-"found" target. He compares it to kids shouting "I found FREEDOM" during a crossword search — announcing a discovery effectively consumes it for everyone. The paradox has direct implications for information-sharing design in multi-agent systems.

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