The problem here isn't so much that Facebook are doing it, but that people want it. It gives positive reinforcement of people's own world view, whilst reducing

The problem here isn't so much that Facebook are doing it, but that people want it. It gives positive reinforcement of people's own world view, whilst reducing the amount of media someone has to see that runs counter to that. In essence, it's a safe space for everyone, whatever their views. I'd be happy to state that this isn't a good thing, but it's something that people like and want. I worry that Facebook actively pushing something counter to this wouldn't have the effect of increasing people's breadth of understanding, but instead of making them seek out something else to provide that space.