In a personalized world, important but complex or unpleasant issues are less likely to come to our attention at all.

In a broadcast society, there were these gatekeepers, the editors, and they controlled the flows of information. Along came the Internet and it swept them out of the way, and it allowed all of us to connect together, and it was awesome. But that's not actually what's happening right now.

Personalization is based on a bargain. In exchange for the service of filtering, you hand large companies an enormous amount of data about your daily life--much of whic you might not trust your friends with.

More voices means less trust in any given voice.

It's a civic virtue to be exposed to things that appear to be outside your interest. In a complex world, almost everything affects you – that closes the loop on pecuniary self-interest. Customers are always right, but people aren't.

Facebook was looking at which links I clicked on, and it was noticing that I was clicking more on my liberal friends' links than on my conservative friends' links. And without consulting me about it, it had edited them out. They disappeared.

I think it's easier than ever to hear only what you want to hear. That doesn't make a good citizen.