Aradia opened her mouth to give a quick answer, then paused and decided to rewind and explain a bit more fully. "Let's just say that you and I decided to watch this movie, but then I changed my mind. So then I went back in time and stole my movie disk so we couldn't watch it. Instead, we ended up watching something else. That timeline where we watched this one would be a branch, that isn't the real sequence of events."

She shrugged. "But what happens to the version of us that watched the movie after I went back and changed things? It's doomed. By some means, you and I would both die, probably within a day or two, and only the version of you and I in the alpha timeline would continue to live."