Yes, they are both the original. That's my point. There's no duplication or erasure or replacement. There's only the one ship, one continuous existence, but the time warp allowed that existence to overlap itself for 71 hours. Gomtuu20's statement is wrong; while under normal circumstances, an entity can only exist in one place at a time, a temporal warp allows an abnormal circumstance in which an entity can coexist with its own past self. This is called a closed timelike curve, and there are detailed equations describing how it can theoretically arise as a consequence of the laws of General Relativity.
See my comments in post #4 about worldlines. Each of us is a 4-dimensional entity existing over a span of time as well as space. Who and where you are at any given moment is merely an instantaneous cross-section of the worldline that defines your entire 4-dimensional self. If your worldline passes through a time warp, it can loop back and run parallel to an earlier part of itself, like a loop in a string. If you take a cross-section of that string in the looped portion, you would see it occupying more than one point at the same time. But that doesn't mean there are two strings. It just means there's one string that passes through that point twice. One string, one worldline, one ship.
