 SPOILER: Two deleted scenes gave some Skynet and the Future War some  more background. The first was a scene where Sarah discovers that a  company called Cyberdyne will be responsible for building Skynet and  the Terminators. She tries to convince Reese that they should  destroy this company, in order to prevent the dark future from ever  happening. Reese tells her that his mission is conserving the  future, not changing it. The second scene shows that Cyberdyne owns  the factory where Sarah battled the Terminator, and one of their  employees finding the Terminators microchip (this event actually  causes Skynet to exist in the first place). Both these ideas became  major plot points for the sequel  _Terminator 2: Judgment Day (1991)_ (qv). Director  James Cameron (I) (qv) cut the scenes because he wanted to leave  some questions yet unanswered, which he never regretted as he could  make an entire sequel out of the unused ideas.