How algorithms learn to walk... Our universe is built from atoms and molecules, governed by the quiet laws of physics. A mountain stands because gravity demands it. A valley forms because water insists on finding its way. But in a game world, none of that exists  - not until we create it. A mountain is just geometry; a field is only an arrangement of vertices and pixels. There is no gravity, no friction, no path - unless we teach the world to understand itself. So, the questi