In 'Timeless', which is a great ep that I watched again last night, Kim says something like: "If we'd changed history, we wouldn't still be here trying to change it!"
This struck me as odd when I watched it on first broadcast (many years ago now!) but it's even odder now that the new Star Trek film has come out- why WOULDN'T they still be around if they'd changed history- wouldn't the alternate history just play out in a different timeline? The question is rendered moot when the Flyer explodes (the timeline may well have continued), but still, he seemed pretty sure of how time travel was 'supposed' to work.
This struck me as odd when I watched it on first broadcast (many years ago now!) but it's even odder now that the new Star Trek film has come out- why WOULDN'T they still be around if they'd changed history- wouldn't the alternate history just play out in a different timeline? The question is rendered moot when the Flyer explodes (the timeline may well have continued), but still, he seemed pretty sure of how time travel was 'supposed' to work.