I earned my CS BS degree almost 30 years ago. My school kind of served as a training ground for mainframe programmers. We had plenty of assembler and COBOL, but

I earned my CS BS degree almost 30 years ago. My school kind of served as a training ground for mainframe programmers. We had plenty of assembler and COBOL, but not much in systems architecture and design. There is a lot that has become much more relevant since then: Security, networking, and distributed systems. But if I could have taken one more course, I'd really like to have studied graph theory.