system
Given the following post, respond as if you're commenting on Reddit:
human
[Terminator 2] why was the CPU set to read only on the terminator?

The terminator was sent back by the resistance to protect john Connor. We learn that cybernet places all CPUs on outbound journeys to read only (to prevent them learnign too much and separating from the collective) so why then was the CPU not changed to read and write prior to sending back by the humans?
gpt
For the same reasons Skynet usually keep them in read-only mode: they don't want it learning too much and going against its orders. We see that Terminators, once allowed to learn, can become fully self aware and self-determinant, able to make their own choices and disobey any pre-programmed directives. Uncle Bob does it in the end, going against his programming which tells him to obey John no matter what, and disobeying him when John orders him not to go into the molten steel.

So it seems logical to me that the Resistance would be fearful of that happening but with the Terminator deciding to help Skynet instead. So they set it in read-only mode so that it can *only* protect John and follow his orders. Don't forget, that was a terminator, a tool of the Enemy. The Resistance probably trust it as far as they can throw it but had no other choice but to use it.