I have to admit, if a student had come to me with plans for a one-piece cantilevered chair with a profile this thin, I’d probably try to steer them in a different direction. Pushing limits is one thing, but that doesn’t mean pretending that they don’t exist (and unless you’re going to cast the whole thing out of metal, it’s probably a fantasy). But the 8.0 chair pulls off the fantasy, thanks to a new structural concrete called _Ductal_. At up to ten times stronger than conventional concrete, _Ductal_ approaches the strength of steel and as the name suggests, it’s also ductile, so it will flex rather than crack – I can admit when I’m wrong.