Navarone9942 said:
My pet plot hole is Terminator
How exactly is John Conner even there to begin with, Kyle only met Sarah because John sent him back to protect her from the 1st T800 and the T800 is sent back to kill the Survivors leaders mother and in doing so creates said leader. Kinda like the old time travel back and kill your grandfather, cant because you would never be born and then kill him so he lives and you are born.
Great! Now we can get back on topic by pointing out that your plot hole isn't a plot hole.
In a linear progression of time, what comes first in that story? Answer: Reese arriving from the future and impregnating Connor. It therefore makes perfect sense that - following a linear progression of time - John Connor exists in the future. His existence would only become paradoxical if he
didn't send Reese back in time (which would result in his nonexistence), but in fact he does so no paradox exists. All it means is that in an attempt to retcon the past the machines unknowingly created the present.
You could argue there's a paradox that if the machines were aware of Reese's existence in the past and its direct effect on the present they would never have sent the T800 in the first place, but the events in Terminator happened pretty off the radar so we wouldn't expect Reese's presence (or identity) to be common knowledge, or even that there was a T800 in the past (more on that later). Besides, wouldn't they assume their plan was doomed to failure simply due to the fact that Connor
exists (I guess they assumed changing the past could alter the present?)? Hell, it's possibly Skynet had no freaking idea themselves that the remnants that lead to its creation were from the T800 Connor sent back in time. Even when the machines were manufacturing T800s who knows if they were even
capable of realising that the parts responsible for Skynet were the same parts they were building - or maybe they
did recognise the parts and assumed they must've sent that T800 themselves, hence why they sent a T800 back in the first place (but wouldn't they realise that mission failed if Connor exists and there's nothing but scrap left of the machine, and not waste a machine by sending it on a suicide mission?). There's little indication that the machines are particularly intelligent or creative, they're just efficient and self-aware. Come to think of it it's a wonder they came up with the idea to assassinate a woman in the past to solve their current problems.
Anyway, there are a number of problems with the Terminator movies, but I don't think the one you listed is one of them.