...that's a complicated question and I'm not sure you'd believe the answer, my darling. It turned into a nasty little timeloop, with me chasing me own tail in circles round an aberrant timeline till I dropped. The Barge put it right for me. That's 'ow we're paid, see?

Plus, I might've been exaggerating about the universe; really it were just the one solar system. A bit of an important one, mind you, not to say familiar.