Post-modernism can be seen as a development of the modern style. In the mid-twentieth century architects began to find the Modernist vocabulary restrictive. They felt limited by the puritan forms strict adherence to modernism implied. Arguably the NZ architects leading this break with modernism were Roger Walker and Ian Athfield ; other NZ architects while not embracing the change so wholeheartedly acknowledged the trend in their work. Post-modernism is characterised by increased complexity and contradiction, the use of ornament and references to historic styles.