The authenticity of the object and the ambiguity. The object is made by many layers named "human personal perception." The object's shape is constructed by overlayed human perceptions. The object shape you can see at the moment is simply just the most external layer. When people see the object, they attempt to understand it unconsciously and they think there is an essence, however, the object is constructed by numerous human perception, if you peel off the layer one by one, there is nothing inside. When things to be clear, it means things to be ambiguous at the same time. If there is an essence, this paradox might be. Everything you can see is relative, it is just a temporary package.