This paper analyzes data from a novel field experiment designed to test the impact of twodifferent insurance products and a secret saving device on solidarity in risk-sharing groupsamong rural villagers in the Philippines. Risk is simulated by a lottery. Risk-sharing ispossible in solidarity...

This research suggests that a Darwinian evolution of entrepreneurial spirit played asignificant role in the process of economic development and the dynamics of inequality withinand across societies. The study argues that entrepreneurial spirit evolved non-monotonicallyin the course of human...