[wolvoleo]

> The kids want to use Facebook. If parent A refuses to let their kid use Facebook, then kids B, C, D, E, F... all use Facebook and kid A becomes a social outcast. This actually happens. (Well, now it's other apps; kids don't use Facebook anymore.) This is similar to the mobile-phones-in-schools problem: if a parent doesn't let their kid bring a phone to school, and all the other parents do, that creates social isolation. When the school district bans the phones, it solves the problem for everyone. (So it's a collective action problem, really.)

If so many people give their kids phones and so few don't, why ban them in the first place? Clearly the vast majority of parents are fine with their kids having one.

You're just inventing a problem then. Or worse, implement a conservative talking point.