If it's so foolproof, why hasn't somebody done it yet?

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

You can hear this line at 00:15:17 in the Blu-ray version of the movie.

Quote context

[...]

- Now, a sweet little bundle from Texas, sweet as chocolate candy. The tantalizing... Honey Face.

- Sorry about the interruption, boys, I got a job to do.

- What's the word, Vince? We have to catch a plane.

- I never figured you'd go this route.

- The plan is foolproof. Take my word for it. You know I only lie to girls.

- If it's so foolproof, why hasn't somebody done it yet?

- Same reason nobody's gone to the moon yet: No equipment.

- We're equipped. It's going to be a military operation executed by trained men.

- Why waste all those cute little tricks the Army taught us just because it's sort of peaceful now?

- You remember a little bit called Operation Gold in Oran?

[...]