And you can see the algorithms at work in your google news feed. Click on an article about the monster waves in Nazarre, Portugal and suddenly you get lots of stories about surfing. Click on a story about how fucking dumb Diblasio is snd suddenly you get lots of stories about how fucking dumb Diblasio is.
People only see what they have indicated interest in by means of a click. They begin to believe that is the whole story.