Why does packer use the metaphors of assembly line justice and obstacle course justice to characterize his crime and control and due process models of criminal justice?

Packer uses the metaphors of assembly line justice and obstacle course justice to highlight the contrasting approaches of the crime control and due process models of criminal justice. Assembly line justice represents the crime control model, emphasizing efficiency, quick processing, and the prioritization of societal safety over individual rights. In contrast, obstacle course justice symbolizes the due process model, focusing on protecting individual liberties, ensuring fair procedures, and navigating complex legal safeguards. These metaphors illustrate the tension between maintaining public order and upholding justice for the accused.