"Our connections to the train. Or our spirits, such as they are—I can't imagine it's necessarily pleasant to rely on something with no other end to keep us here, let alone stable."

For what he does and doesn't know, and here is Tidus, who has been nothing else but the presence here on the Voidtrecker Express since the moment of his arrival. Not unique, this has been true for the dead he's met here, and many are dead, but the depth to which Tidus is unstable where others are not becomes unique, becomes the train's extension of self in a way that surprises.