Well, the author notes that the workplace upgraded to terminals after just a year or two. I know that the high school where my mom taught programming in Chicag

Well, the author notes that the workplace upgraded to terminals after just a year or two. I know that the high school where my mom taught programming in Chicago still had punch card technology (no terminals) as of the early 1980s, although the upgrade happened around then. Also some of the other mentions (eg IBM clicky keyboards) are consistent with a 1983 date.