When Models Get Lost in Space: Why MLLMs Still Fail Geometry
Geometry looks clean. A cube has edges. A projection has rules. A missing view should follow from the views already shown. This is not the messy world of occluded street scenes, motion blur, shadows, or a warehouse camera pointed at the wrong shelf. It is the kind of visual reasoning many students learn before they are trusted with anything more dangerous than a compass, a ruler, and mild boredom. ...