That's my point, depending on how the image is presented to you will depend on how your eye and brain sees the image.
When I first saw it, I saw a black devil as the image was shown in its original intended orientation, the second time I saw it, a few days later was by accident but viewed from upside down and the first item I saw was the white angel and trying subsequent experiments, I notice that the orientation or the way this image is presented plays a large part in how the viewer responds.
