Big Bang Theory Quote
Penny: So it's sort of like a guitar string, but instead of making an actual sound, each vibration is a different particle.
Sheldon: Precisely. And when you express it in eleven dimensions, Einstein's relativity equations pop out. Does that sound like a coincidence?
Penny: It does not.
Sheldon: Yup. That's what I think.
Penny: So... so, did we do it? Did we just solve string theory?
Sheldon: (with a chortle) Oh. I appreciate your enthusiasm, but this is not the sort of thing we can figure out in a night. People have been stuck on this for decades.
Penny: What, decades? Really? It's... it's a string. How hard can it be? It-it... it's straight, it's in a loop, it gets knotted up with other strings. Uh...
Sheldon: Well, actually, there are no knots in anything greater than four dimensions. Ooh, unless we get around that by considering them as sheets. You know, topologically speaking, that has a lot of interesting possibilities.
Penny: See? How long did that take me, like a minute?
Quote from S11E13 - The Solo Oscillation