As one of the world's richest men who has worked at the intersection of technology and philanthropy, Bill Gates possesses a unique worldview that he brings to bear on trying to solve some of the world's most pressing problems. In an exclusive interview with NDTV on Thursday, the founder of Microsoft and the Bill and Melinda Gates Foundation spoke on a wide range of issues, from India's leadership in digital infrastructure and the country's "brilliant work" in the field of vaccines to artificial intelligence and the cup of tea he had in Hyderabad, which was prepared by social media sensation Dolly Chaiwala.