The document summarizes a presentation on human-centered design given by Lilian Tse of Frog Design. It begins with an introduction to Frog Design and its focus on human-centered design methodologies. It then discusses a case study where Frog used human-centered design to help GSMA understand why a mobile agriculture program in Sri Lanka was unsuccessful. Through user research, Frog found the initial assumptions about farmers' needs were incorrect. They identified farmers' true needs which led to a new service concept. The results showed high adoption rates and repeat usage, helping the program succeed.