John Connor young John is skeptical of his mother's claims of his fate as humanity's leader. One day, while in an arcade with a friend, the T-1000 (Robert Patrick) and the T-800 (Schwarzenegger) - a reprogrammed android sent by John's future self, fight over him. This starts a chase sequence where the T-800 and John try to lose the T-1000; this event validates John's mother's warning to him about Skynet. Later that night, his mother breaks out and he and the T-800 go to save her, and the three escape. John teaches The Terminator how to be like a human; teaching him
T-1000 also not specifically designed to encounter other Terminators and has little knowledge of their diagnostics. This allows the T-800 to take it by surprise. The T-1000 had previously shut the T-800 down, but did not know of the older model's emergency reboot power mode. It is stated in Terminator 3, the T-X was designed with the knowledge necessary to destroy other Terminators and thus diagnostic files of other Terminators was in its internal database. The Special Edition DVD release of "T:2" contains additional scenes in the steel foundry showing that the damaging effects of being frozen, shattered and thawed caused