[He probably hasn't heard it specifically yet, but he had his suspicions after meeting Giorno and this lends them weight, and he turns to look at her again.]

It's still a few years ahead of you, if you make it back there. [Which is probably not good to tell her, pop culture time travel theories being what they are, but fuck it.] I'm from 1988, so it's ancient history. You probably don't wanna talk about wars, though, and I don't remember enough of what we learned about it to give you the right info.