Jack chuckles warmly. He can barely remember what it was like not being used to time-travel, though he knows he found it confusing at first too.
Then the smile fades as up there on the screen the vid shows him making his goodbyes to Rose and the Doctor. "I died." Right on cue, there's a shot of him facing down the Daleks and an extermination that still makes him wince, even after all this time. "And Rose brought me back, but as an abomination in the Doctor's eyes. He couldn't stand to be around me, so he left. Abandoned me on a dead space station, hundreds of thousands of years out of my own time, or Rose's. And that was that. Almost a century and a half until I managed to hook up with him again and find out what actually happened."