Our new paper titled Design of Space Truss Based Insulating Walls for Robotic Fabrication in Concrete as part of the Humanizing Digital Reality book. Romain Duballet has been working on the on the design of ultra-light concrete walls for individual or collective housing, the normative context being constrained masonry. A robotic manufacturing technique based on mortar extrusion that allows producing more efficient walls is used. He made use of optimisation and genetic algorithms in order to design a structure optimised for robotic construction. Romain is also a founding member of XtreeE, a startup company specialised in developing large-scale 3D printing equipment.