Did Davies rip off a Moffat concept for this story?

"Hey, Blink was a really good episode that a lot of fans liked. What if I just tweaked that whole 'living off stolen time' idea that Steven came up with. Yeah. That's fucking brilliant."

whomod said: I generally don't like it when people decide to play by the rules against people who don't play by the rules.
It tends to put you immediately at a disadvantage and IMO is a sign of true weakness.
This is true both in politics and on the internet."

Our Friendly Neighborhood Ray-man said: "no, the doctor's right. besides, he has seniority."