Da Vinci's unfinished study of St. Jerome shows his first attempt to pictorially depict the curved quantum vacuum which
his perceptual genius allowed him to see, but which he was finding difficulty to share with perceptually challenged
humanity. Conventional art historians call the Da Vinci “hole in space” a picture of a cathedral on a rock wall.
Actually it is a picture of a building through a rock wall which shows both the building outline and the space surrounding
it. The hole in space through which we observe the building is perfectly arced showing that Da Vinci recognizes the surrounding
vacuum to posses a quantum curvature