One of my first recollections of graduate school at MIT was being called into a room with all the department heads to justify why I wanted to change departments. Salvodore Luria, Jack Buchanan, and Cyrus Levinthal were seated while I stood making my case. It was a bit intimidating but they accepted my reason. At the time, MIT had divided biology into several small departments, Biochemistry, Microbiology, Biophysics. I had applied to and been accepted to Biochemistry thinking that Boris Magasanik would…