I interviewed someone who worked in the IT department at one of the largest manufacturers of commercial vehicles, and a mainframe / COBOL shop. He described the

I interviewed someone who worked in the IT department at one of the largest manufacturers of commercial vehicles, and a mainframe / COBOL shop. He described their development process. It involved printing out your source code, hole-punching the paper, putting it into a three-ring binder, and placing it in the physical inbox on the desk of the person who was assigned to conduct code review.