Why systems thinking changes everything for activists and reformers

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In an extract from his new book How change happens, Duncan Green explores how change actually occurs - and what that means.

"The essential mystery of the future poses a huge challenge to activists. If change is only explicable in the rear-view mirror, how can we accurately envision the future changes we seek, let alone achieve them? How can we be sure our proposals will make things better, and not fall victim to unintended consequences? People employ many concepts to grapple with such questions. I find “systems” and “complexity” two of the most helpful."