Pipeline Installation / Dosis. Image © Imagen Subliminal (Miguel de Guzmán + Rocío Romero) In Six Memos for the Next Millennium , Italo Calvino explores lightness from a literary perspective and argues, "Opposed to lightness is weight. Removing weight produces lightness; it is a value, not a defect." Drawing on Greek mythology, he reflects on one of Perseus's feats after severing the head of the terrible Gorgon Medusa without being turned to stone. Assisted by the gods Hades, Hermes, and Athena, Perseus flies with his winged sandals and uses a bronze shield as a mirror to reflect her image. Relying, like many architects, on what is lightest—the wind and the clouds—he also fixes his gaze on what is revealed through indirect vision: an image reflected in a mirror. Historically, transparency has been naturalized as an inherent condition of modern architecture .…