Principle 16: Evaluation as Intervention

Blue Marble refers to the iconic image of the Earth from space without borders or boundaries, a whole Earth perspective. We humans are using our planet’s resources, and polluting and warming it, in ways that are unsustainable. Many people, organizations, and networks are working to ensure the future is more sustainable and equitable. Blue Marble evaluators enter the fray by helping design such efforts, provide ongoing feedback for adaptation and enhanced impact, and examine the long-term effectiveness of such interventions and initiatives.

Summary: Michael Quinn Patton’s Blue Marble Evaluation is a forward-looking, path-breaking, and timely contribution to evaluation theory and practice. The title of the book evokes the Blue Marble shot—a photograph of the whole earth taken by the Apollo 17 astronauts in 1972. The preface of the book displays the first image of our lonely planet captured from space in 1968 (Earthrise).

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