The same image Source/credit: EndersGame_Reviewer What am I looking at? The photos on the left and right are the same image, just rotated. The reason that we see the one on the left as concave and the one on the right as convex is because our brains assume that light is coming from above. More optical illusions:AngelHovering CarErased Street ArtUp or Down?Dock to the skyBicycle wheels on a truckSome shiny legsA Whale of a Cloud