Five people walk into a room. They’re all what may be called active readers in that they read at least a book or two a month. One of them brings up a book. None of the others have read it. One only reads award-winners and bestsellers, another is reading her way through Dickens (last year she did the same with Trollope), that guy only reads genre, as do the last two, but it’s a different genre than the first guy’s, and these two are reading at the opposite ends of it. Maybe there’s a book they have all read and can discuss. Inevitably this book will be tied in with a class somewhere at which point the conversation will drown itself in nostalgia.
Across the street, five people walk into a room. They’re all active television viewers. They follow at least one TV show a week. One brings up a show. They may not all like it, but they all talk about it. Conversation achieved.