He shrugged. "Absolutely no idea. That's not really the point. That's never really the point of what I do. Time is always in flux. What matters is where we are, right this minute. Your Doctor think this way, too. There's a certain Professor Yana running around minus some pounding in his head. Not exactly sure what he meant to accomplish in the long term, but his words to me were something along the lines,of there was one left half-crazed man running around and that was enough for him. I can only imagine that he took that problem on, because he thought he could actually handle that one, safely."