Apparently you haven't seen the movie because while I didn't think the reasoning was strong it was there. The whole reason they were able to come back in time was because thier actions didn't stop skynet, only slowed its creation. Think of it this way. Instead of the military annexing Cyberdine systems and all its tech, it had to continue working from basically scratch. As you can see while it would take longer, the outcome would still be the same.
Slashdot Mirror
Apparently you haven't seen the movie because while I didn't think the reasoning was strong it was there. The whole reason they were able to come back in time was because thier actions didn't stop skynet, only slowed its creation. Think of it this way. Instead of the military annexing Cyberdine systems and all its tech, it had to continue working from basically scratch. As you can see while it would take longer, the outcome would still be the same.