Every possibility he comes up with is kind of crazy, though it's not like she can come up with anything that isn't insane.

"I'm not mad," she answers, rolling her eyes. That's the easiest one to answer--makes it the best place to start. "So it's not that. We're definitely both ignorant, but that doesn't really explain what's going on. And if everyone on Earth is a lab rat...that's not just crazy, that's really screwed up."

And it doesn't make everything happening fiction. The fact that apparently NASA lied to everyone about good space travel, maybe, but the rest of it...

Anyway, that only leaves one thing as an option, and she doesn't have much of an answer to it. Sophomore science never covered this stuff. "Is another universe even possible?"