This mesmerizing kinetic sculpture shows what a four-dimensional tesseract (hypercube) might look like when projected into our 3D world. The artwork continuously folds and unfolds, turning inside out in a hypnotic motion — a beautiful attempt to visualize something our brains can't fully perceive in four spatial dimensions. A real tesseract consists of 8 cubes, 24 squares, 32 edges, and 16 vertices. While we live in 3D space, artists and mathematicians use models like this to explore higher dime

# meaning explained: Why people use the hashtag symbol