Yeah, he did kind of spring that on her. Sorry. But, she mentioned experiments and it reminded Malcolm of his own. It's not so much of an experiment as it is a poll, really.

"It matters if there's a way to leave here or not," he says quietly. He doesn't imagine that there's a way back from death. But if they haven't crossed over that threshold yet, then there might still be a chance. "I agree that we seem alive though. I personally don't remember dying. Maybe this isn't the afterlife. Maybe this is some kind of..." He waves a hand. "Alternate dimension?"