In "Why Walking through a Doorway Makes You Forget," Charles B. Brenner and Jeffrey M. Zacks examine a cognitive glitch known as the "doorway effect." Highlighting research from the University of Notre Dame, the authors explain why we often forget our intentions upon entering a new room. In experiments, subjects carried objects across a single room or through a doorway into another. Those who crossed a threshold had far worse memory retention than those who walked the same distance without leaving the room. Occurring in both physical and virtual settings, this reveals that doorways act as mental boundaries.⁠ ⁠ This amnesia occurs because brains organize short-term tasks using "event models" tied to physical spaces. Working memory keeps information accessible only while it remains contextually relevant. When you cross a threshold, the brain perceives this location shift as the end of an episode. To prepare for the new space, it purges the previous event model to free up cognitive resour...