It’s a quiet Wednesday in the lunchroom. A team meeting is wrapping up, someone stands to stretch, and a colleague slumps to the floor. In the span of a single, terrible minute, a normal day has become an emergency. What happens next depends on preparation, not luck.  Automated external defibrillators — AEDs — are simple, rugged machines designed to deliver life-saving shocks to people in sudden cardiac arrest. They’re meant to be used by ordinary people, not doctors: the device talks you through the steps, analyzes the heart rhythm, and only permits a shock when it’s needed. And yet, despite their simplicity and potential, AEDs […]