>>The people who dealt with Prolog on punchcards were the academics who created and/or refined it in its early days. [0]
That's like a decade of work. Thats hardly early 'days'.
Also the programming culture in the PC days and before that is totally different. Heck even the editors from that era(eg vi), are designed for an entirely different workflow. That is, lots of planning, and correctness before you decided to input the code into the computer.