The Manifesto Against Concrete is a study of expressive materials that transit between the concrete world, with collisions and hard matter, and the virtual world, which has no gravity or collision of particles in their original form. A concrete body is scanned for the virtual and flexed again for the concrete, thinking about actions of existence and performance in these two universes where the lightness of the virtual meets the hardness of the concrete. The flight without gravity in the virtual infinite space is tensioned in a shaky and unstable flight that suffers the effects of gravity, wind and temperature.