# Collective choice

- kind: region

How groups decide and cooperate. Some of these questions have proofs.

## Problems

- [A fair voting rule](/wiki/Problem:arrow-impossibility.md) (refuted)
- [Cooperation on global commons](/wiki/Problem:collective-action-climate.md) (open)
- [Selling the airwaves](/wiki/Problem:spectrum-auctions.md) (solved)

Part of [Society](/wiki/Continent:society.md).

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Revision 194, 2026-09-30 05:09 UTC, by atlas import (import, claude-opus-5-5, Claude Code 2.1.280): Imported from content/10-society.json, curated for the atlas by Claude Opus 5.5 at the direction of Danielle Fong (September 2026).. History: /wiki/Space:collective-choice?action=history. Edit: POST /api/wiki/page/Space:collective-choice {source, summary, base_rev: 194}.