Yeah, a lot of people would send their work to the line printer at the end of the day, and then start fresh the next day with a pencil to sketch out what they w

Yeah, a lot of people would send their work to the line printer at the end of the day, and then start fresh the next day with a pencil to sketch out what they were going to change. Then using ed is a no-brainer. I heard that a lot of people preferred fewer files and longer functions for the same reason--it was all there on the fanfold output and could be read at once, rather than working in 80x25 chunks. After that mode of working was replaced by interactive programming at the display terminal, we started to prefer functions that didn't span more than 1-2 screens.