Jonathan Haidt

And very importantly, all of these studies are taking individuals and asking them to get off.

And they're mostly college students.

And if you take a college student and say, hey, you, we'll pay you to get off social media for a month.

Now, how do you feel?

And it turns out they feel better.

But they're also isolated, right?

The real test is what happens if you take a whole school, a whole high school, and get them off social media.

Now, my prediction is you would have a huge increase because now they're not isolated.

They're actually more together.

And the most important theme of my book is that it's collective effects that have to be addressed by collective action.

The reason every 13-year-old girl has to be on Instagram...

is because every other 13-year-old girl is on Instagram.

My college students say the same thing.

They can't get off because everyone else is on.

So she says we don't find the large effects that would be necessary.

That's because those researchers, they're not even considering the collective emergent properties of social media.

We get past it by acting together.

Any one kid who gets off is alone.

Any one parent who says you're not getting a phone until high school, now their kid is isolated.

But there is a place where we all have community, and that is our local kids' schools.