Why is it so important for 3D data to be exact? After all, drawings on a drafting board weren’t a mathematically accurate representation of designs and they got the job done just fine. Right? Well sort of. We’ve all heard the stories of someone faking in a dimension to show the right value, causing the 2D drawing to become a less accurate representation of the final product and out of sync with the 3D model (if there was one). The results of these out of sync documents usually amount to an unhappy boss.