There are other people in those bubbles, it's not an isolated void. HN is one such bubble. Yes it's a smaller bubble, there's not nearly as many people here as there were watching broadcast television back in the 1980s, but it would be wrong to say there is no culture here. Same goes for the millions of other small communities out on the web and social media. But as I said, it's certainly true there are downsides associated with that diversity.