"That urge-to reach through the screen and do and say intemperate things to my younger, online self (in blunt, unvarnished ways I'd never dream of saying them to anybody face-to-face)-is called cyber disinhibition. And it's at the root of cyberbullying, trolling, flaming, doxxing, 'revenge porn,' and a host of other forms of internet-based cruelty and abuse.

With a full quarter-century of humans online behind us, we're now fully living in a world in which the mature internet is embedded in daily life. We carry it with us in pockets and purses or wear it on our wrists. It's never more than a few inches away. Most people are active participants on at least one social media platform, whether that's Twitter, Facebook, Instagram, Pinterest, or Snapchat. In this era, the effects of cyber-disinhibition are impossible to ignore..."