Penny: Hang on. What do you think? Want to give it a try? [elevator bell dings]
Sheldon: Well, you know, the elevator did work when I moved into the building. So going up and down the stairs was a change, which means this would actually be a return to the status quo. But, conversely, I think-
Penny: Get in!
[the elevator door closes]
Sheldon: This is wild.