 In the past, there have been many examples of social upheaval and systemic power exchanges that can be classified as legitimation crises.According to Habermas, these crises have all occurred as a natural consequence of society's productive advancement, as the social system struggles to adapt to the strains on relations of production.In other words, as a society's "technical knowledge" advances, the equilibrium is disturbed between the technical and political aspects of production, which can result in a crisis if the imbalance isn't corrected by adequate advancement of "moral-practical knowledge."