微观经济学原理曼昆英文第二章.ppt

* * * * * * * * * * * * * * THINKING LIKE AN ECONOMIST * Why Economists Disagree Economists often give conflicting policy advice. They sometimes disagree about the validity of alternative positive theories about the world. They may have different values and, therefore, different normative views about what policy should try to accomplish. Yet, there are many propositions about which most economists agree. THINKING LIKE AN ECONOMIST * Propositions about Which Most Economists Agree (and % who agree) A ceiling on rents reduces the quantity and quality of housing available. (93%) Tariffs and import quotas usually reduce general economic welfare. (93%) The United States should not restrict employers from outsourcing work to foreign countries. (90%) The United States should eliminate agriculture subsidies. (85%) continued… THINKING LIKE AN ECONOMIST * Propositions about Which Most Economists Agree (and % agreeing) The gap between Social Security funds and expenditures will become unsustainably large within the next fifty years if current policies remain unchanged. (85%) A large federal budget deficit has an adverse effect on the economy. (83%) A minimum wage increases unemployment among young and unskilled workers. (79%) Effluent taxes and marketable pollution permits represent a better approach to pollution control than imposition of pollution ceilings. (78%) FYI: Who Studies Economics? Ronald Reagan, President of the United States Barbara Boxer, U.S. Senator Sandra Day-O’Connor, Former Supreme Court Justice Anthony Zinni, Former General, U.S. Marine Corps Kofi Annan, Former Secretary General, United Nations Meg Witman, Chief Executive Officer, eBay Steve Ballmer, Chief Executive Officer, Microsoft Arnold Schwarzenegger, Governor of California, Actor Ben Stein, Political Speechwriter, Actor, Game Show Host Mick Jagger, Singer for the Rolling Stones John Elway, NFL Quarterback Tiger Woods, Golfer Diane von Furstenburg, Fashion Designer * CHAPTER SUMMA