Lucy Suchman revolutionized our understanding of human-technology interaction by emphasizing that technology’s effectiveness depends on real-world, context-specific use rather than pre-defined tasks. Her work, especially in Plans and Situated Actions, showed that human behavior is adaptive and unpredictable, challenging designers to focus on user contexts rather than fixed routines. Suchman’s insights led to more flexible, user-centered design approaches, underscoring that successful technology must account for human variability and the complexities of everyday environments.