Clearly, I don’t ban all screens in my house, and I wouldn’t tell you to ban them in yours, either. But in my work, I’ve seen how little transparency social media companies offer parents and kids about how their systems operate—and how much harm that invisibility can do. In my recent look at the algorithms that drive these platforms—what’s called their feed algorithms—my co-authors and I found that only one of the major platforms, X makes details of how its system works publicly transparent. This is not okay.