often function as a ‘black box’, the workings of which cannot or will not be explained to affected parties [...] rb ul en te M or al . D ie K om m un ik at i- on v on A ch tu ng un d Ac ht un gs en t- zu g (H S) R [...] 2015 Perlman, Janice, Favela. Four Decades of Living on the Edge in Brazil. Oxford 2010 Roberts, Neil, Freedom