create way more value in the world than they destroy. and i think social media is similar. >> i found that troublesome, dr. twangy. i need a car, i don't need instagram. i think the argument he was making is the end justifies the means. how would you interpret that? >> yeah. that's certainly what it sounds like. i agree it's not a great yanl sis, technology writ large isn't that good. but i don't think you can yet make that case for social media, especially because social media is designed to be addictive. it's designed to keep people coming back as many times as possible, for as long as possible. and we know from their own studies as well as outside studies, the longer a teen girl spends on social media, the more likely she is to be depressed and self-harm. >> do you buy into the linkage that i put between this case that has fixated the nation,