Discover the power of leveraging external resources for social change in this TEDx talk by Jack Sim, founder of the World Toilet Organization. Learn how Sim broke taboos surrounding sanitation and created the UN World Toilet Day by utilizing a leverage model for social entrepreneurs. Explore his innovative approach to transforming global poverty through the creation of efficient marketplaces for the world's 4 billion poor. Gain insights into Sim's journey from the construction industry to social entrepreneurship, and his vision for the World Trade Center for the Poor in Singapore. Understand the potential of stakeholder collaboration in addressing massive social issues without relying solely on limited internal resources.