If you're not seeing content on Facebook that challenges your personal views, it's because of your own choices, not an algorithm. But that could change.
Whether you're shopping on Amazon, searching Google, or browsing Facebook, algorithms personalize the experience and point you to content that a machine thinks you want to see. In the sphere of civic discourse, experts have feared that this "filter bubble"—exposure only to news and opinions that users already agree with—will erode political dialogue and create a more polarized society.