This concluding chapter reframes social impact assessment (SIA) through the Capability Approach, drawing on evidence from two WASH (water, sanitation, and hygiene) interventions in Vietnam and Cambodia to challenge output-driven evaluation practices. It argues that dominant logframe approaches privilege mechanical accountability—counting infrastructure and participation—while obscuring whether people gain real freedoms. Development outcomes, the chapter contends, should be judged not by outputs delivered, but by the extent to which individuals—especially women and marginalised groups—gain substantive freedoms to shape decisions and lead lives they have reason to value. The chapter sets out three principles for a capability-oriented approach to SIA, integrating participatory theories of change, plural methods, and iterative learning to reposition evaluation as a dialogic and ethical practice. It emphasises that impact should be assessed through lived experience rather than externally imposed indicators. A people-centred evaluation ethos therefore rests on three pillars: recognising individuals as ends in themselves; treating communities as co-producers of knowledge; and embedding adaptive learning beyond fixed reporting cycles.