19. What is path dependence? Discuss in the context of the case studies presented in this course. 20. To what extent does climate change reflect a market failure and/ or policy failure? Explain. 21. What is the argument presented in the video Message in the Waves? How does it reect the economics of technological change, market forces and consumer choice? What is your view about the resolution of the problems discussed in this video? 22. What is the argument presented in the book by Brynjolfsson and McAfee? Discuss in light of the other material presented in this course. What is your View about the future of work and the distribu'don of income? Are you optimistic? Explain