The document discusses the intersection of technology and street dance styles known as 'illusion styles,' focusing on how metaphors from technology and mathematics inform these dance vocabularies. It explores the backgrounds and techniques of three particular styles—liquid, digitz, and finger-tutting—and emphasizes the role of technology in their evolution and practice. A proposed conceptual framework, termed 'structural illusion from embodied motion,' aims to explain the expressivity and virtuosity seen in these dances, highlighting how viewers' perceptions are influenced by their assumptions about the body's movement and space.