Architectural work has moved from lines on a screen to data-rich models that can show how a building will be built, used, coordinated, and explained before the first major site activity begins. That shift matters. A 2D drawing can describe a wall. A BIM model can define its size, material, fire rating, location, cost relevance, coordination impact, and construction sequence. A 4D BIM animation can then show when that wall appears on site and how it interacts with the rest of