Using their signature spoof of functionalism, the Haussmanns' furniture designs critically yet playfully subverted contemporary modernist discourse In 1978, architect couple Trix and Robert Haussmann created their first "Didactic Pieces" ( Lehrstücke ), pushing functional furniture to absurdly modernist conclusions. Here, Trix Haussmann herself retraces the genesis of their 12 creations in 12 chapters, accompanied by sketches and reference images.