Video: Yoga with MJH

Introduction: When Effects Distort Our Understanding of Causes In 1946, statistician Joseph Berkson noticed something peculiar in hospital patient data: diseases that should have been independent appeared to be negatively correlated. Cancer patients seemed less likely to have diabetes, and vice versa. This observation seemed to contradict everything known about disease independence. The answer to this paradox would eventually reveal one of the most counterintuitive principles in causal reasoning—the collider effect. A collider is a variable that sits at the convergence point of two or more independent causal pathways. The structure looks deceptively simple:Variable X → Collider Z ← Variable Y Two independent causes (X and Y) flow into a common effect (Z). But here’s the paradox: when we condition on the collider—when we only…

Introduction For nearly two decades, I’ve witnessed the profound impact that leadership styles have on yoga communities. As both student and teacher in the Ashtanga tradition, I’ve experienced firsthand how the decisions, behaviors, and communication patterns of those in positions of authority shape not just the technical transmission of the practice, but the very culture in which we learn and grow. When I first began teaching Ashtanga yoga over 10 years ago, I consciously and unconsciously replicated the leadership models I had experienced. Some of these served our community well; others perpetuated patterns that limited growth and authentic connection. Like many teachers, I found myself caught between reverence for tradition and the practical reality that our understanding of both human movement and effective teaching continues…