Knowledge Matrix on Instagram: "This is a trompe-l’œil anamorphic illusion, a classic illusion art technique designed to “trick the eye” into seeing three-dimensional objects on completely flat surfaces. In this video, the artist is applying a perspective-correct mural across two flat walls and the ceiling corner, carefully aligning angles, shadows, and highlights so that—when viewed from one precise viewpoint—the flat paint appears as a solid 3D cube floating out of the wall. The illusion works