[He raises his eyebrows at that.]

Four years?

[It's said with less contempt and more mild surprise. So people have been here for at least that long with no signs of an answer as to how they got here. That's...really something.]

Well I'm not about to lose any sleep over not knowing. Something to consider in the future, I suppose.

By the way, who might you be?

[So far he can tell this guy really likes hissing, for some reason...]