Imagine that humans traveling through time are like ants walking along a thread. If there’s a tangled mess of knots and chaos, the ants could walk all over the place. If the thread is not in contact at any place, the ants would be left with no choice but to keep on going in one direction.
Knots would serve as time traveling points where you can freely jump from one part of the timeline to another. Depending on how tangled the thread is, there could be multiple time jump opportunities.
I don’t think it makes sense to be walking on top of a thread of time, as if we are separate from time. Our being is inseparable from the thread of time. The fibers in the fabric are our experience, we are the fibers, and we still travel through a one-directional thread, no matter how tangled.
This allegory fails when you start thinking about it a bit more. The point is, that knots and tangles should provide moments when time travel could be possible, but only to a specific point in time. If there are no knots, there is no time travel.
Well at least, that’s the way I like to think of it if I end up writing a sci-fi book about time travel. Who knows how that would work in real life.
