- It's as simple as that.
- Yes, in theory.

5 seconds sound clip from the Ocean's 11 (1960) movie soundboard.

You can hear this line at 00:57:10 in the Blu-ray version of the movie.

Quote context

[...]

- Every casino's got an auxiliary motor that generates enough power to light up the gambling tables and the cashiers' cages whenever the main cable fails, which happens quite often.

- The auxiliary motor kicks in automatically. 20 seconds and they're back in business.

- Except they won't quite be back in business on account of you, Tony.

- Let me ask you a question: What happens if you cross the wires that operate the lights with the wires that open the cage doors?

- When the auxiliary motor kicks in, instead of the lights going on, the doors of the cages will click open.

- It's as simple as that.

- Yes, in theory.

- But to be sure, I have to study the main switch box in each casino.

- Oh, but you will, you will.

- Is this the only road in or out of Vegas?

- Yeah, that's Route 91. Why?

- I remember reading about this guy in Perth...

[...]