@vi2labs: Vertical Axis Inversion: Protocol Phase 08. Almost all bistable illusions rely on horizontal yaw (left to right). Switching the rotation to vertical pitch (top to bottom) breaks the standard tracking pathways of the visual cortex. Because this polyhedron has zero vertical perspective cues, your brain is forced to decide: is the apex tumbling forward toward you, or rolling backward away from you? Override Drill: 1. Fixate on the highest point of the pyramid tip. 2. Mentally push that apex down into the screen. 3. Once flipped, try to reverse the roll upward. Is it tumbling toward you or away from you?