Pablo Brañas-GarzaAntonio CabralesMaria Paz EspinosaDiego Jorrat2026-03-222026-03-22202510.2139/ssrn.5916045https://doi.org/10.2139/ssrn.5916045https://andeanlibrary.org/handle/123456789/84604Collective actionAmbiguityAction (physics)Public goodEconomicsSample (material)Positive economicsMicroeconomicsStrategic uncertainty in collective action problemspreprint