[applause] I want to begin by telling you a bit more about the man who taught me to ask why. My grandfather was my first professor. He didn't teach at a university.Instead, he taught me about science and engineering around the kitchen table. We used to spend hours taking apart radios. And when he taught me how to construct my first perfect circle using a compass, my mind was blown.My grandpa didn't just teach me facts. He taught me that the world was a puzzle waiting to be solved. And if only one had enough ...