Yaneva argues that design does not merely represent an already constituted society but materially participates in making social relations durable. Her exemplary staircase, elevator and coded door lock show how scripts, affordances and technical features distribute action between bodies and artefacts, obliging, enabling, redirecting and differentiating conduct. The theoretical contribution lies in shifting design analysis from symbolic interpretation toward mediation: an object is not evidence of a social structure located elsewhere but an actor whose associations continually recompose the social. Methodologically, Yaneva adopts a pragmatic, ethnographic attention to mundane trajectories, asking what objects do before assigning them hidden meanings. This permits design to be read as a connector through which moral, political, psychological and institutional worlds are enacted at the scale of handles, widths, buttons and access protocols. The argument makes a precise bridge between architectural studies and Actor-Network Theory, while also intersecting ecological accounts of affordance by showing that environments are neither passive settings nor neutral containers but active distributions of possible action.