Jung grasps something most people miss: we don't simply *encounter* others and remain unchanged, as if we were sealed vessels. The transformation cuts both ways, which means you cannot influence another person without being altered yourself—a humbling truth that dissolves the illusion of remaining neutral or untouched in any meaningful relationship. When you help a friend through crisis, console a grieving colleague, or even argue passionately with someone, you're both fundamentally different afterward, whether you acknowledge it or not. This explains why some friendships fade after one person changes careers or relocates; the very container that held the "reaction" between you has vanished, and neither of you can simply resume where you left off.