When I started my programming career, my first boss did not know how to use a text editor. He could perform a randomizing routine in his head but he trembled at using a text editor -- he still used punched cards and/or a mainframe utility that emulated a punch card. And lots of programmers coded first on columnar grid paper (shades of green and white, demarcations at 8, 12, 16 to help you indent properly.
My community college still had us writing C on huge tablets of that IBM grid paper in the late 90s. I can't imagine writing huge amounts of production-worthy code that way.
