Sean digs deep. When you’re working with him on a project, you know he’s going to uncover a wealth of information and insights to inform the solution. He doesn’t just settle for a brisk Google session followed by banging out a few scattered observations. His office library was a source of envy for me—each book filled with notes and highlights. And finally, the man is a Rembrandt of the white board. I was always dismayed when his kaleidoscopic, multidimensional flowcharts and diagrams had to be unceremoniously erased to make way for the next meeting.