Organisational_And_Societal_Rationalisation_Process represents the systematic transformation of social institutions, organisational structures, and cultural practices toward greater efficiency, predictability, and rule-based coordination characteristic of modern societies. These processes embody Max Weber's central insights about the fundamental character of modernity, where traditional, emotional, or value-based modes of social organisation are increasingly replaced by rational, calculable, and bureaucratic approaches. Rationalisation manifests in the development of formal rules, procedures, and hierarchical structures that prioritise efficiency and systematic organisation over personal relationships or traditional authority. Bureaucratisation represents the institutional expression of this broader rationalisation trend, as organisations adopt formal hierarchies, specialised roles, and standardised procedures to manage complex activities. Modernisation encompasses the comprehensive social transformation toward rationalised institutions, technological advancement, and systematic approaches to social organisation. These processes fundamentally reshape how societies coordinate collective action, make decisions, and organise productive activities. While rationalisation has enabled unprecedented levels of social coordination and technological achievement, it also creates new forms of social control and can lead to what Weber termed the "iron cage" of bureaucracy. Understanding these processes is crucial for analysing how modern societies balance efficiency with flexibility, formal coordination with personal autonomy, and systematic organisation with creative innovation.