AR gives us everything, every contour of a wall, every grain in the floor, every shift in light. But raw AR scans are messy, chaotic, and vast. Millions of points without hierarchy. A universe without physics. To build a digital world from this, we must reduce the infinite into something graspable. We filter, cluster, reconstruct. We search for planes buried in the noise. We simplify the unnecessary, compress the redundant, and extract the essential shape of a space. What beg