This visual essay centers on “Projection of Shadows,” relying on comparative photography rather than text as its primary medium. The author presents a unique visual discovery: interactive images that contrast ordinary shadows of bodies and leaves with an optical phenomenon where perspective renders these solid subjects seemingly transparent. While a secondary textual section addresses “Social problems since the modern era,” the core philosophical argument remains visual. By challenging our standard perception of solidity and light, these photographs compel us to question our rigid cognitive “coordinates,” visually revealing the hidden permeability of the reality we construct.