Re: John Connor's existence POLL
Can't speak for T4 at the moment (haven't seen it yet), but he DOES have a page with follow-up for T3 that would pretty much work. I don't entirely get the motivation for Brewster to send Arnold back, but the rest more or less flows.
His reasoning behind Sarah survivng without Kyle's help would be that in the itteration before Arnold came to kill her, Arnold's parts can't be found because they aren't there, so Skynet is created later in the timeline, and the terminator they sent the first time may have been less advanced. It looked like, in that timeline, she escapes the initial attack, and survives to give birth to a child before the Terminator catches up and kills her. That all seemed to mostly survive his explanation...
Perhaps, if I am very lucky, the feeble efforts of my lifetime will someday be noticed and maybe, in some small way, they will be acknowledged as the greatest works of genius ever created by man. ~Jack Handey