This TED-Ed companion resource explores a fascinating and often overlooked challenge in modern medicine: why the human immune system attacks beneficial implants like insulin pumps and pacemakers. Designed for high school and college-level students, this resource includes 20 thought-provoking discussion questions, an extended writing prompt, and a compelling debate topic to engage learners in biology, anatomy, health sciences, or biomedical ethics. Perfect for class discussion, homework, or pr