[Rey folds her arms over her chest, leaning her weight to the side as she looks up thoughtfully.]

Yes. Nick Valentine was actually someone who died over two hundred years prior. The ones who made him just stuck the guy's memories in his head, but it didn't always take. So they kept doing it for a long time.

He doesn't really remember that, though. Probably for the best.

[Nick doesn't remember, but Rey does? It's one of those "it's complicated" things.]