Rationalisation of society, a key concept in the work of Max Weber, refers to the historical and ongoing process by which traditional, emotional, or value-based modes of thought and social organisation are increasingly replaced by rational, logical, efficient, and calculable approaches based on scientific knowledge, abstract rules, and bureaucratic procedures as the dominant mode of human thought and social structuring in modern societies. Weber saw this process as a defining characteristic of modernity, influencing various aspects of social life, including the economy, law, politics, and religion, leading to the development of bureaucratic institutions and a focus on efficiency and instrumental reason. While rationalisation has brought about progress in many areas, Weber also warned of its potential negative consequences, such as the "iron cage" of bureaucracy and the loss of meaning and individual freedom.