커뮤니케이션 도구 진화 스케치

A horizontal timeline sketch on off-white sketchbook paper showing the evolution of communication tools from ancient to modern. On the left, tiny ink drawings of cave paintings, cuneiform tablets, carrier pigeons, and handwritten letters; in the middle, printing press, telegraph, telephone; on the right, smartphones, video calls, and futuristic holographic devices. Each object is drawn with simple lines and minimal shading, then lightly colored with colored pencils using visible strokes. Handwritten dates and one-line descriptions appear beneath each icon, with small arrows and dashed lines connecting key transitions. Occasional side notes point to surprising facts such as message speed or adoption rates. The layout is slightly uneven, with some entries squeezed together, giving an honest, sketchbook feel rather than a perfect infographic. The paper texture, soft shadows at the corners, and organic imperfections reinforce the sense of a designer’s exploratory concept sheet.