[...] He turns to DAniela. "I got everything I ever wanted, except you. And you haunted me. What we could've been. That's why-"

"Then you should have stayed with me fifteen years ago when you had the chance."

"Then I wouldn't have built the box."

[...]

He says, "Every moment, every breath, contains a choice. But life is imperfect. We make the wrong choices. So we end up living in a state of perpetual regret, and is there anything worse? I built something that could actually eradicate regret. Let you find worlds where you made the right choice."

Daniela says, "Life doesn't work that way. You live with your choices and learn. You don't cheat the system."