Obama was on David Letterman’s new show on Netflix. He said that the things you search for online creates personalized algorithms that may, or may not reflect reality. It’s YOUR personal reality and it could be way out in left field.
Obama then recounted a science experiment (“not a big scientific experiment, but just an experiment that somebody did during the revolution that was taking place in Egypt”) where a liberal, a conservative and a “quote-unquote moderate” were asked to search for “Egypt,” and Google presented each of them with very different results.
“Whatever your biases were, that’s where you were being sent, and that gets more reinforced over time,” he said. “That’s what’s happening with these Facebook pages where more and more people are getting their news from. At a certain point you just live in a bubble, and that’s part of why our politics is so polarized right now.” Source