Hang on. No, Sarah Connor thinks she can prevent the future and essentially does at the end of T2 when the guy from Cyberdyne gets killed and the bits of the Terminator get destroyed. So she undoes the inevitability.
She believes that she changed the future; but according to the rules of the paradox she could not have. If she had, her son would cease to exist. It's the same reasoning that Skynet believes it can change the past and get rid of its biggest nemesis when, in reality, it created him by building the technology that allows his father to go back in time and fuck his mom and cause her to raise him with the tools he'll need to fight his robotic overlords.
