The same white shape on the front, and on the back — creating a luminous extrusion between the two sides..
You never see both at once. The dialogue only exists in the mind of the person who has seen both sides.
Front & Back Object
Inspired by the origin of shape. No one invented the triangle — it has always existed in nature. The slope of a mountain, the angle of a shadow.
Ancient pictographic writing systems (Chinese, Sumerian, Mayan) all independently arrived at triangle-like glyphs for mountains. The pyramid was inevitable.
