I heard a similar story from a professor who was doing his graduate work in mainframe days. (Paraphrasing) 'When you learn to program on punch card with batch

I heard a similar story from a professor who was doing his graduate work in mainframe days. (Paraphrasing) 'When you learn to program on punch card with batch jobs, you get really good at writing it correct the first time. Because if you write it wrong, it's (a) overnight processing to find out, (b) another day to fix it, (c) another overnight to get the updated results.'