In 1980 I applied to grad schools, including UNC. I had read "The Mythical Man-Month" by then, so I was floored one day sitting in my office when the phone rang and I heard, "This is Fred Brooks." I visited UNC where I saw the famous row of clocks that Steve Bellovin mentions in his memorial post. The "System 360 Principles of Operation" remains one of the most important pieces of writing in computer history, in my opinion, because it dominated the hardware and established the principle that an architecture ensures software execution.