The document discusses open design and how to design for participation. It defines open design as making digital blueprints available for adaptation and custom fabrication to meet user needs. This diminishes traditional top-down design and enables more direct links between designers and users. However, simply making designs open does not guarantee participation. The document explores challenges like unequal participation and whether users truly want to engage. It also examines how users appropriate and tweak designs in practice through "design by use". The goal is to understand how open design can foster new ways of involving users beyond just making designs available.