Midterm findings of the OSMARE project after 18 months of work in rural Malawi and Zimbabwe. The (preliminary and general) message to value chain players: “When designing or adapting a business model (e.g. contract with training, microfinance scheme, input supply, or other complex form of transaction) for and with farmers, you should leave some purposive slack for experimentation, learning and adaptation to local and rapidly changing (climate, social, and market) conditions.” »