[格里高力曼昆的经济学原理].Mankiw.2003.Principles.of.Economics

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1、INTHISCHAPTERYOUWILL...LearnthateconomicsisabouttheallocationofscarceresourcesExaminesomeofthetradeoffsthatpeoplefaceLearnthemeaningofopportunitycostSeehowtousemarginalreasoningwhenmakingdecisionsDiscusshowincentivesaffectTENPRINCIPLESpeople’sbehaviorOFECONOMICSConsider

2、whytradeamongpeopleorThewordeconomycomesfromtheGreekwordfor“onewhomanagesahouse-nationscanbegoodhold.”Atfirst,thisoriginmightseempeculiar.But,infact,householdsandforeveryoneeconomieshavemuchincommon.Ahouseholdfacesmanydecisions.Itmustdecidewhichmembersofthehouseholddowh

3、ichtasksandwhateachmembergetsinreturn:Whocooksdin-ner?Whodoesthelaundry?Whogetstheextradessertatdinner?WhogetstoDiscusswhymarketschoosewhatTVshowtowatch?Inshort,thehouseholdmustallocateitsscarcere-areagood,butnotsourcesamongitsvariousmembers,takingintoaccounteachmember’

4、sabilities,perfect,waytoefforts,anddesires.allocateresourcesLikeahousehold,asocietyfacesmanydecisions.Asocietymustdecidewhatjobswillbedoneandwhowilldothem.Itneedssomepeopletogrowfood,otherpeopletomakeclothing,andstillotherstodesigncomputersoftware.Oncesoci-Learnwhatetyh

5、asallocatedpeople(aswellasland,buildings,andmachines)tovariousjobs,determinessometrendsintheoveralleconomy34PARTONEINTRODUCTIONitmustalsoallocatetheoutputofgoodsandservicesthattheyproduce.Itmustdecidewhowilleatcaviarandwhowilleatpotatoes.ItmustdecidewhowilldriveaPorsche

6、andwhowilltakethebus.Themanagementofsociety’sresourcesisimportantbecauseresourcesarescarcityscarce.Scarcitymeansthatsocietyhaslimitedresourcesandthereforecannotpro-thelimitednatureofsociety’sduceallthegoodsandservicespeoplewishtohave.Justasahouseholdcannotresourcesgivee

7、verymembereverythingheorshewants,asocietycannotgiveeveryindi-vidualthehigheststandardoflivingtowhichheorshemightaspire.economicsEconomicsisthestudyofhowsocietymanagesitsscarceresources.Inmostthestudyofhowsocietymanagesitssocieties,resourcesareallocatednotbyasinglecentra

8、lplannerbutthroughthescarceresourcescombinedactionsofmillionsofhouseholdsandfirms.Economiststhereforestudyhowp