"Just like that." The Doctor's voice was cold, but he could feel Jack's pain, understand how deeply it hurt. There wasn't a way short of a psychic army that could reconstruct that part of the timeline, and he didn't think he had a psychic army that owed him any favors. Well, he might've, but he didn't remember them if he did.

To remember, even just a little bit. To see what could've been, if he'd just stopped the timelines from altering. If he'd just been the Time Lord he was supposed to be. It would hurt, a lot. A lot more than the Doctor was probably ready for.

"How?"