It’s almost impossible to understand teenagers, so it shouldn’t surprise us that most of the reasons we think teens have lost interest in Facebook are probably wrong. FastCo’s Ryan Bradley takes a crack at understanding Facebook’s lost generation of teens.

+ Of course, Facebook isn’t just Facebook anymore. Between acquisitions and new product launches, Facebook is essentially morphing into a mutual fund of apps and technologies that it hopes can keep the company ahead of the curve. Its latest offering is a Snapchat-like disappearing photo app called Slingshot. (Only in Silicon Valley could Goliath get the Slingshot.)