The Blind Spots in Facebook's Ad Machine

Facebook’s ad platform is quick to learn, easy to use and incredibly profitable. But the complex algorithms that make the ads run are still a black box for most people, and that can create problems—particularly when it comes to politics. This week on Decrypted, Bloomberg Technology’s Sarah Frier and Brad Stone  take a look at how the system works and explain why fixing issues on the platform is harder than you might think.