Yet again the topic is raised that social media is harming our youth. Just as Seneca of Rome once complained that reading too many books was corrupting the youth, so too do we moderns complain about our own technology. But now it comes with a twist: social media has been anthropomorphized into a sentient being, force-feeding out children propaganda to turn their brains to mush and their muscles to puddy.

Let’s get one thing straight: social media gets money through clicks. Without clicks, advertisers won’t advertise, because they know that users aren’t engaged enough to read the ads. And the social media can’t force you to click, the user has to do that themselves.

So what do users click on? Overwhelmingly it’s exactly what they claim to hate and avoid. This is a classic case of revealed preferences, people like to claim that they are moral and high-minded, that they spend their time on science and philosophy. Overwhelmingly they prefer to spend their time on video games, celebrities, and politics. So if social media is feeding you mindless garbage, it is because you have revealed through your click habits that you prefer to eat trash.

When you first log in to any social media website, it has no idea what you like. By default, it will start sending you a very random and scattershot selection of everything it has on offer. But very quickly, you will start clicking on the things that interest you, and ignoring the things that don’t. And so social media has learned that the vast majority of us won’t click on a science post if our life depended on it, we’d rather read about Taylor Swift instead.

Next time a politician complains that their social media feed is nothing but trash, and that they have legislation to regulate social media more, tell them about revealed preferences. That politician is advertising to the world that they themselves are a trash human being.