Well, back home you take care of them. Maybe nobody does that for them here.

[Then again ghosts seem to pop up in pretty much any word, regardless of what mechanisms may be in place to lead them to the afterlife. Things may simply have been run more smoothly in antiquity.]

I honestly don't even know whether it'd help if I got him to understand what year it is and that all his friends and family are long dead. Maybe I'll just keep hanging out with him without expectations that anything will change.