"That's what I'm hoping! That's what most of us are hoping. The train, of course, gives us the obvious reason, that it needs Void Warriors to help it with its missions of mercy to endangered planets. But what if that's not the real reason? What if in fact we passengers are serving some other purpose?" He scratches his head. "If there is another purpose and we knew what it is, then we'd have a lot more information to go on, in order to figure out how to get everybody home who wants to go."