She studied Cognitive Science at Stanford, arriving in 2006 just as Facebook was opening to the public. She watched, horrified and fascinated, as her peers replaced eye contact with scrolling. Her senior thesis, “The Dopamine Loop: Intermittent Reward in Digital Architecture,” was largely ignored by her professors. They called it “alarmist.” The tech recruiters who read it called it a “blueprint.”
Her core contribution to digital wellness is the concept of —the idea that attention is not a single beam but a series of nested loops. She teaches that a healthy digital life looks like a fractal pattern: micro-focus (30 seconds to reply to a text), meso-focus (25 minutes for deep work), and macro-focus (3 hours for creative flow). Most apps, she argues, are designed to trap you in the micro-loop indefinitely.
In the cacophony of the 21st century, Sarah Harlow is the whisper that finally cuts through the noise. And for millions of people, that whisper is loud enough to change everything.
Her most recent project, Project Hermes , is an AI companion that does not talk. It listens. It tracks the interruptions in your speech during video calls and alerts you only when you have interrupted someone. "Empathy as a metric," she calls it.