The egg, being symmetrical without a defined top or bottom, can appear differently oriented depending on one's perspective. For example, to perceive the egg as stable, one might expect the pointed end to be at the bottom, but from another viewpoint, the pointed end might appear more stable at the top. 

Thus, the interpretation of the photograph varies according to individual perspectives, resembling the artist’s perception of the boundary between stability and instability, where things without a clear top or bottom can feel stable or unstable depending on one's viewpoint.