English is my second language, I am hispanic, so excuse my typo's. As for me naming Hicks instead of Kyle Reese, a simple mistake since they are the same actor and I had watched Aliens the same day. I'll read all of this thread, but it will take time. There has to be more than two timelines since you have the chicken and egg argument. Reese (Hicks as I called him above) had to have been born before John Connor. That is why I mention that we do not see the first timeline where Kyle Reese is sent back by someone else (since his son doesn't exist yet) and he has to meet Sarah Connor in the past and impregnates her. His mission then was to destroy skynet and not to save Sarah. THe timeline we see in Terminator 1 has to do with John Connor discovering that the Terminators have sent back in time a T800 to kill his mother.He in the future in that timeline does not know for sure Kyle Reese is his father (or he assumes it because he has the same name as his father learnt thru his mother) but sends him back anyways to protect his mother. John gives a picture of his mother to Kyle for reference. In T2, the moment the T1000 gets sent back changes the timeline once more. Once that failed, the TX was sent back changing the timeline a fourth time. And in Salvation they revive Marcus Wright in order to infiltrate and trick John into rescuing Kyle Reese. Ultimately this explanation is the best I can come up with after watching all the movies many times. SilentSurfer, there has to be a timeline at some point where John Connor did not exist yet until Kyle Reese went back in time and impregnated Sarah Connor. Now that even did not have to happen at the exact moment in time it did in T1, however it had to have happened in that order.
1. First unaltered timeline before the time machine was built : Skynet takes over and becomes self aware at a later point in time than we know of in the movies. Kyle Reese (at an unknown age) gets sent back or sends himself back in order to stop Skynet creating a whole new timeline where John Connor exists.
Timeline 2: Kyle meets Sarah Connor and impregnates her while attempting to destroy Skynet. Obviously his son John is more successful in this timeline gathering a resistance prompting skynet to send back a Terminator to kill Sarah so he wouldn't be born starting a new timeline (3) however John learns of this and sends back Kyle with a picture of his mother to save her. At that point he does not know Kyle is his father. We can only guess at the ages of John and Kyle at this point, however Kyle is probably 25-30 and John would be 10 years or so older.
Timeline 3: This is what we see in Terminator 1 which leads to John surviving and speeding up the process cyberdyne creates the T800 because of the parts found in the factory. So Skynet, losing the war once again thanks to John Connor sends back the T-1000. This creates timeline 4.
Timeline 4: THe T-1000 is unsuccessful and Cyberdyne and their lead scientist are gone. However Arnold leaves behind his arm again which is found and Cyberdyne continues with the research along with the Government and skynet and judgment day occurs again. However John is successful at almost defeating the machines once more in the future. Which prompts Skynet to send back the TX in order to speed up the formation of skynet (Timeline 5) now that the internet is all around the world as opposed to the 80's and kill all of the resistance members (Colonels) they know about including John and his wife. They actually succeed in speeding things up and kill key colonels however they fail to kill John and his wife. Terminator Salvation is the continuance of this timeline...
We can assume the TX is sent back to speed things up by implanting the virus and that she also uploads all of her knowledge of the future as well in order to speed up skynets ability to make the perfect infiltrator. The TX uploaded this info either embedded into the Virus, or into the T1-2 unit she switched on. Which is why Marcus Wright was able to be revived and used in Salvation as the ultimate infiltration unit and using a more advanced endoskeleton structure. Humans are needed to perform the intricate heart and body surgery, no machine could have done that operation. In this timeline, skynet knows the other previous models T800 and T1000 as well as the TX failed in their missions. However they have to keep sending them all back to the same time in order for events to keep on occurring as they do. WHich makes me believe Skynet does not know Kyle Reese is John's father, because if they did they simply don't send the T800 back which prompts Kyle to go back allowing John to be born but the events in the first unaltered timeline get repeated since no T800 arm gets left behind. So if Skynet does know Kyle is John's father, not messing up the future may be the reason they have to keep sending back the failed Terminators to the exact moments in time knowing they will fail...So surfer, do you agree with any of my theories about the timelines? I count 5 of them and no less.