Oskar Zieta did not decide what inflated steel would look like. He discovered that inflated steel has its own formal logic, and then he spent decades learning to collaborate with it. Two flat sheets of stainless steel are laser-cut, welded at their edges, and then inflated with air pressure until they find their own three-dimensional form. He calls it a controlled loss of control. MoMA calls it a collection. The Vitra Design Museum calls it a collection. Centre Pompidou calls it a collection. The Kraken, his latest work, is a giant steel squid.