At around that time, I would see multi-hour delays on compiles of COBOL code on a busy mainframe. Not because the compiles really took a long time, but because

At around that time, I would see multi-hour delays on compiles of COBOL code on a busy mainframe. Not because the compiles really took a long time, but because the development region could not keep up with the submission rate of compile jobs from developers. That aside, work got done. You spent a little more time checking your code for errors instead of letting the compiler do it.