In the second to the last episode of "Big Bang theory", Season 12 "The Change Constant", Sheldon is already giving up on a variety of things when a simple change of life sends it over the edge: the elevator begins to work again. Penny is the first to take them to their floor, and as Sheldon stands besides saying that he can't handle more changes, the doors open, at what point Penny says, "Can you believe it? They finally fixed the elevator!" Cuoco remembered the following:

"(Director) Anthony Rich got the script earlier (than we did), so I said, 'Tell me something! Tell me something!" Because I'm the girl who reads the last page before each book. And all week I was thinking: "I wonder what it is, I wonder what it is" and when I found out I had to be in the elevator, that was that To me. I was very excited. I couldn't wait to do it in front of the audience. Before our producer, he killed! People were screaming for all the reasons you would like. "

As Steve Molaro said, one of the long -standing executive producers and writers of the show, the team thought it would end the whole series with the revived elevator, but had to deceive the audience only small. "Chuck always thought the elevator was finally opening maybe the last scene, but as we approached, I think you may feel that people are expecting it," Molaro said. "We wanted to do it, but we wanted to try to catch people out of guard."

Molaro's colleague, writer and executive producer, Steve Holland, confirmed this. "There was one version of where everyone was walking the stairs after they returned from (the Nobel laureate), and just as they reached the fourth floor, the elevator would have been and opened," Holland said. "There was talk of a moment in which Sheldon and Amy say," It's crazy; we won the Nobel Prize and in a way, everything is exactly the same, "and then the elevator opens and that would be the end of the show."

The elevator eventually repaired, but it is still a strange plot hole that Howard was wondering why it was broken in the first place. "Big Bang theory" is entirely HBO Max.