With time-sharing, you're losing control over the machine. With batch-processing, you've got essentially total control over the machine during your time-slot.

With time-sharing, you're losing control over the machine. With batch-processing, you've got essentially total control over the machine during your time-slot. I don't have any resources on the discussion that happened at IBM, but "Hackers" by Steven Levy has a good account of the 1960s anti-time-sharing crowd at MIT. (On the more fun side, I took the original "Tron" as an allegory for the time-sharing debate; it falling more on the anti-time-sharing side)