I remember, I decided to write my "" Why the World Isn't Flat "" article, because I was being interviewed on TV in Mumbai, and the interviewer's first question to me was, "" Professor Ghemawat, why do you still believe that the world is round? "" And I started laughing, because I hadn't come across that formulation before. (Laughter) And as I was laughing, I was thinking, I really need a more coherent response, especially on national TV. I'd better write something about this. (Laughter) But what I can't quite capture for you was the pity and disbelief with which the interviewer asked her question.