John Anderton: Any contractions?
Casey: Only the ones you give me.
Agatha: Murder.
Wally the Caretaker: I like you chief, you've always been nice to me. I'll give you two minutes before I hit the alarm.
John Anderton: Why'd you catch that?
Danny Witwer: Because it was going to fall.
John Anderton: You're certain?
Danny Witwer: Yeah.
John Anderton: But it didn't fall. You caught it. The fact that you prevented it from happening doesn't change the fact that it was going to happen.
John Anderton: Why don't you cut the cute act, Danny boy, and tell me what it is you're looking for?
Danny Witwer: Flaws.
John Anderton: There hasn't been a murder in six years. There's nothing wrong with this system it is.
Danny Witwer: Perfect I agree, but there's a flaw. It's human.
Suggested correction: I thought that this was a mistake as soon as I saw it on screen, but reconsidered. It's perfectly possible that there was some, probably human caused, delay in updating the security system. After all, there wasn't a rush to do it since they already had the chief on ice. Maybe the sleep jail was still on a legacy system without automatic updating. Just assuming that in the near future that all systems are all perfectly integrated and instantaneous does not validate this as a mistake.