How immersive VR and 3D simulation learning moved from novelty to necessity across education, healthcare, manufacturing, and the modern workforce. A first-year nurse pulls on a headset and steps into a code-blue emergency. The patient's oxygen is falling. She calls for help, chooses a drug, and watches the monitor respond to her decision. No real patient is at risk. When she lifts the headset, she has already lived through the kind of mistake that once happened on real people. That scene...