Nandan Nilekani, Infosys co-founder, transformed a one-page government directive into Aadhaar, the world’s largest biometric ID system, serving over 1.3 billion people. His leadership united technologists and bureaucrats, achieving 600 million IDs. Driven by curiosity and human-centered problem-solving, Nilekani now aims to improve literacy for 200 million children through EkStep.