The Big Bang Theory2007

Howard Wolowitz:
What are you guys doing here?

Leonard Hofstadter:
When you left you weren't sure whether or not you wanted to know what was in your Dad's letter so we came up with kind of a cool solution.

Howard Wolowitz:
Oh yeah, what's that?

Sheldon Cooper:
It's simple really. It occurred to me that knowing and not knowing can be achieved by creating a macroscopic example of quantum superposition. The principle that a physical system exists partially in all of its possible states at once.

Penny:
We were all thinking it, really. Kind of the elephant in the room.

Sheldon Cooper:
Anyway, um, I realized if we each present you with an account of what your father wrote to you, only one of which is true, and we don't tell you which one it is, you will be forever in a state of epistemic ambivalence.

Penny:
Yeah. And he said if it wasn't epistemic, we might as well not even do it.

Bernadette Rostenkowski:
Sit down, honey.

Leonard Hofstadter:
Raj, you're up.

Raj Koothrappali:
It was a card for your eighteenth birthday. Inside it said: Happy Birthday Howard. I love you, Dad. Oh, and it was a Far Side card, The one where the frog had his tongue stuck to the underside of an airplane. Thinks it's a fly. Silly frog. So funny.

Leonard Hofstadter:
Sheldon.

Sheldon Cooper:
It was a map leading to the lost treasure of famous pirate One-eyed Willy.

Howard Wolowitz:
That's fine. That's the plot for The Goonies.

Amy Farrah Fowler:
Told you.

Sheldon Cooper:
Don't.