Abstract

A Reviving Rationality Theory offers a knowledge-based and practical framework to rebuild rational thinking in response to the complex crisis of our time. This crisis comes from the limits of traditional rationality, modern instrumental rationality, and postmodern relativism, which have led to stagnation, alienation, environmental destruction, and theoretical paralysis. Reviving Rationality defines rationality as an evolving system of knowledge and action based on three principles: coherent epistemic pluralism, constructive criticism, and evolutionary responsibility. Using multilayered critical realism, it examines reality at four levels (empirical, event-based, structural, and evolutionary) and draws knowledge from five sources (logical reasoning, empirical experience, practical intuition, social dialogue, and historical wisdom). By solving the paradox of fallibilism through distinguishing between the content, method, and purpose of knowledge, and emphasizing human dignity as a core principle for both knowledge and action, this theory moves beyond classic dualities like structure versus freedom or individual versus society. It systematically critiques instrumental rationality, postmodern relativism, and static traditionalism, proposing a three-stage process (analysis, synthesis, decision) and four criteria (logical coherence, alignment with evidence, practical effectiveness, and ethical consistency) to evaluate beliefs and decisions. Reviving Rationality is not a return to traditional or modern rationality, nor a full acceptance of postmodern critiques; instead, it provides an evolutionary, responsible, and inclusive framework that combines the strengths of scientific methods and logical analysis with diverse knowledge sources and ethical considerations to tackle complex issues like climate change and social inequality. This framework is a theoretical tool for rational and humane thinking, open to critique and improvement.