The social foundation is the inner boundary of Raworth's doughnut: the composite floor of human dignity composed of twelve dimensions drawn from the Sustainable Development Goals. The foundation is not a checklist to be completed one dimension at a time. It is an interconnected system in which each dimension supports and depends on the others. Health depends on income. Education depends on nutrition. Political voice depends on social equity. A person above the foundation on eleven dimensions and below on one has not achieved thriving — she has achieved a fragile, vulnerable improvement that can be reversed by any shock along the unaddressed dimension.
The framework's insistence on twelve simultaneous dimensions is what distinguishes it from single-variable measures of deprivation — income alone, or the Human Development Index's three components. Raworth draws on decades of development economics, most directly on Amartya Sen's capability