Those same kind of surprises don't seem to happen to me the same way with online information. In the digital world, I find myself tending toward existing in a self-selected filter bubble. It's the difference between getting too much of what I like and not enough of what I need.

The real danger, right now, is losing engagement due to people finding themselves in a filter bubble, where people are never challenged by viewpoints that oppose what they already think.

Eli terms this phenomenon a "filter bubble" — a special sort of echo chamber. The better our filters get, the less likely we are to be exposed to something novel, unexpected, or uncomfortable.