'Organising government can be as important as policy. In his 2017 Wentworth Lecture to the Australian Institute of Aboriginal and Torres Strait Islander Studies, Secretary of the Department of the Prime Minister and Cabinet Martin Parkinson noted that there had been eleven structures of Commonwealth Indigenous affairs administration under twenty-one ministers in the fifty years since the 1967 referendum. This, he argued, was ‘churn’ in the machinery of government, which impacted on ‘the transfer of knowledge and capability from one generation of public servants to the next’.' (Introduction)