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Introduction: What is informality? Part 1. Informality and its Assets 1. Defining Informality 2. The growing formlessness and unpredictability of social life 3. Informality and styles of interaction Part 2. Revealing the insignificance of informality 4. Explaining cooperation 5. Making music together 6. The dynamics of innovation Part 3. Informality in the changing world 7. Technology and informality 8. Political change and informality Conclusion: informality and democracy
Mische et al. (Sun,) studied this question.