IN MAY 2021, Twitter, a platform notorious for abuse and hot-headedness, rolled out a “prompts” feature that suggests users think twice before sending a tweet. The following month, Facebook announced AI “conflict alerts” for groups, so that admins can take action where there may be “contentious or unhealthy conversations taking place.” Email and messaging smart-replies finish billions of sentences for us every day. Amazon’s Halo, launched in 2020, is a fitness band that monitors the tone of your voice. Wellness is no longer just the tracking of a heartbeat or the counting of steps, but the way we come across to those around us. Algorithmic therapeutic tools are being developed to predict and prevent negative behavior.