Nothing here, just lights and clockwork. Go ahead, you trust 'em if you want to

Susan Calvin:

What happened to you? Detective Del Spooner:
Headed back to the station. Normal day, normal life. The driver of a semi fell asleep at the wheel. Average guy, wife and kids, working a double. *Not* the devil. The car he hit, the driver's name was Harold Lloyd. Like the film star, but no relation. He was killed instantly. But his twelve-year-old was sitting in the passenger's seat. Never really met her. Can't forget her face, though. Sarah. [fingering the necklace] Detective Del Spooner:
This was hers. She wanted to be a dentist. What the hell kind of twelve-year-old wants to be a dentist? Yeah, um... the truck smashed our cars together and pushed us into the river. You know, metal gets pretty pliable at those speeds. She's pinned, I'm pinned, the water's coming in. I'm a cop, so I know everybody's dead. Just a few minutes until we figure that out. NS4 was passing by and jumped in the river. NS4 Robots:
[from flashback]
You are in danger! Detective Del Spooner:
[from flashback]
Save her! NS4 Robots:
[from flashback]
You are in danger! Detective Del Spooner:
[from flashback]
Save her! Save the girl! Detective Del Spooner:
But it didn't. Saved me. Susan Calvin:
The robot's brain is a difference engine. It's reading vital signs. It must have done... Detective Del Spooner:
It did. I was the logical choice. It calculated that I had a 45% chance of survival. Sarah only had an 11% chance. That was somebody's baby. 11% is more than enough. A human being would've known that. Robots, [indicating his heart] Detective Del Spooner:
nothing here, just lights and clockwork. Go ahead, you trust 'em if you want to