




已閱讀5頁,還剩20頁未讀, 繼續(xù)免費閱讀
版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進行舉報或認領(lǐng)
文檔簡介
JOURNALOFECONOMICBEHAVIORREVISED23JUNE2000ACCEPTED15SEPTEMBER2000AVAILABLEONLINE28MARCH2002ABSTRACTTHISPAPERISANATTEMPTTORAIDBOTHTHELITERATUREONMODULARDESIGNANDTHELITERATUREONPROPERTYRIGHTSTOCREATETHEOUTLINESOFAMODULARITYTHEORYOFTHEFIRMSUCHATHEORYWILLLOOKATFIRMS,ANDOTHERORGANIZATIONS,INTERMSOFTHEPARTITIONINGOFRIGHTSUNDERSTOODASPROTECTEDSPHERESOFAUTHORITYAMONGCOOPERATINGPARTIESANDITWILLASSERTTHATORGANIZATIONSREFLECTNONMODULARSTRUCTURES,THATIS,STRUCTURESINWHICHDECISIONRIGHTS,RIGHTSOFALIENATION,ANDRESIDUALCLAIMSTOINCOMEDONOTALLRESIDEINTHESAMEHANDSAUTHORKEYWORDSMODULARITYPROPERTYRIGHTSTRANSACTIONCOSTSCAPABILITIESSTANDARDSJELCLASSIFICATIONCODESD23L22ARTICLEOUTLINE1INTRODUCTION2MODULARITYANDCOMPLEXITY3DESIGNPROCESSES4ENCAPSULATIONBOUNDARIES5MODULARITY,PROPERTYRIGHTS,ANDORGANIZATION6MODULARITY,ORGANIZATION,ANDTECHNOLOGY7AMODULARITYTHEORYOFTHEFIRMREFERENCES1INTRODUCTIONMODULARITYISAVERYGENERALSETOFPRINCIPLESFORMANAGINGCOMPLEXITYBYBREAKINGUPACOMPLEXSYSTEMINTODISCRETEPIECESWHICHCANTHENCOMMUNICATEWITHONEANOTHERONLYTHROUGHSTANDARDIZEDINTERFACESWITHINASTANDARDIZEDARCHITECTUREONECANELIMINATEWHATWOULDOTHERWISEBEANUNMANAGEABLESPAGHETTITANGLEOFSYSTEMICINTERCONNECTIONSSUCHIDEASARENOTNEWINTHELITERATUREOFTECHNOLOGICALDESIGNSIMONANDALEXANDER,EVENIF,ASSOMECLAIMBALDWINANDCLARK,1997,MODULARITYISBECOMINGMOREIMPORTANTTODAYBECAUSEOFTHEINCREASEDCOMPLEXITYOFMODERNTECHNOLOGYWHATISNEWISTHEAPPLICATIONOFTHEIDEAOFMODULARITYNOTONLYTOTECHNOLOGICALDESIGNBUTALSOTOORGANIZATIONALDESIGNSANCHEZANDMAHONEY1996GOSOFARASTOASSERTTHATMODULARITYINTHEDESIGNOFPRODUCTSLEADSTOORATLEASTOUGHTTOLEADTOMODULARITYINTHEDESIGNOFTHEORGANIZATIONSTHATPRODUCESUCHPRODUCTSFROMANOTHERANGLE,HOWEVER,THEPRINCIPLESOFMODULARITYHAVEANEVENLONGERPEDIGREEINTHESOCIALSCIENCESWECANTHINKOFADAMSMITHS“OBVIOUSANDSIMPLESYSTEMOFNATURALLIBERTY“SMITH1976ASAMONGTHEEARLIESTPROPOSALSFORHOWACOMPLEXMODERNSOCIETYMIGHTBEMADEMOREPRODUCTIVETHROUGHAMODULARDESIGNOFSOCIALANDECONOMICINSTITUTIONSINSEPARATINGMINEFROMTHINE,RIGHTSOFPRIVATEPROPERTYMODULARIZESOCIALINTERACTION,WHICHISTHENMEDIATEDTHROUGHTHEINTERFACEOFVOLUNTARYEXCHANGE,ALLUNDERTHEGOVERNANCEOFTHESYSTEMSARCHITECTUREOFCOMMONLAWIWILLTRYTOSUGGESTTHAT,DESPITEITSHEAVYEMPHASISONINCENTIVEISSUES,THEECONOMICSOFPROPERTYRIGHTSTHATEMERGEDFROMTHEWORKOFCOASEANDCOASEINBOTHITSORIGINALFORMFURUBOTNANDPEJOVICH,1972ANDITSMOREFORMALRECENTINCARNATIONHART,1989PROVIDESAGOODDEALOFMATERIALUSEFULFORUNDERSTANDINGTHENATUREANDROLEOFMODULARITYINSOCIALINSTITUTIONSAVENNDIAGRAMWOULDREVEALONLYTHETHINNESTOFOVERLAPSBETWEENTHEMANAGEMENTLITERATUREONMODULARITYANDTHEECONOMICSOFPROPERTYRIGHTSTHEMANAGEMENTLITERATUREASKSHOWANDWHYFIRMSSHOULDDESIGNMODULARPRODUCTSANDHOWTHEYSHOULDORGANIZETHEMSELVESINTERNALLYTOCOPEWITHTHOSEMODULARPRODUCTSTHELITERATUREONWHATISIMPLICITLYMODULARITYINSOCIALINSTITUTIONSASKSHOWTHEINTERACTIONSAMONGORGANIZATIONALUNITSSHOULDBESTRUCTUREDTOINCREASEWEALTHANDPROMOTEECONOMICGROWTHTHEOVERLAPPINGQUESTION,OFCOURSE,ISCOASESQUESTIONWHATDETERMINESTHEBOUNDARIESOFORGANIZATIONSWHYARESOMEMODULARSOCIALUNITSGOVERNEDBYTHEARCHITECTUREOFTHEORGANIZATIONANDSOMEGOVERNEDBYTHELARGERARCHITECTUREOFTHEMARKETTHISPAPERISANATTEMPTTORAIDBOTHTHELITERATUREONMODULARDESIGNANDTHELITERATUREONPROPERTYRIGHTSTOCREATETHEOUTLINESOFAMODULARITYTHEORYOFTHEFIRMTHISTHEORYWILLLOOKATFIRMS,ANDOTHERORGANIZATIONS,INTERMSOFTHEPARTITIONINGOFRIGHTSUNDERSTOODASPROTECTEDSPHERESOFAUTHORITYAMONGCOOPERATINGPARTIESANDITWILLASSERTTHATORGANIZATIONSREFLECTNONMODULARSTRUCTURES,THATIS,STRUCTURESINWHICHDECISIONRIGHTS,RIGHTSOFALIENATION,ANDRESIDUALCLAIMSTOINCOMEDONOTALLRESIDEINTHESAMEHANDSTHEREASONSBEHINDALTERNATIVEPARTITIONSARENUMEROUSANDCOMPLEX,HOWEVER,CALLINGFORSUBTLETYINTHEAPPLICATIONOFTHEIDEAOFMODULARITYTOTHEFIRM2MODULARITYANDCOMPLEXITYTHEWORLDISFULLOFCOMPLEXSYSTEMSNATUREPROVIDESANABUNDANCEOFCOMPLEXORGANISMSANDECOSYSTEMS,ANDHUMANSHAVECONSTRUCTEDCOMPLEXMECHANICAL,INTELLECTUAL,ORGANIZATIONAL,ANDSOCIALSYSTEMSBUTWHATEXACTLYDOESITMEANFORASYSTEMTOBECOMPLEXFORHERBERTSIMON,ACOMPLEXSYSTEMIS“ONEMADEUPOFALARGENUMBEROFPARTSTHATINTERACTINANONSIMPLEWAYINSUCHSYSTEMS,THEWHOLEISMORETHANTHESUMOFTHEPARTS,ATLEASTINTHEIMPORTANTPRAGMATICSENSETHAT,GIVENTHEPROPERTIESOFTHEPARTSANDTHELAWSOFTHEIRINTERACTION,ITISNOTATRIVIALMATTERTOINFERTHEPROPERTIESOFTHEWHOLE“1SIMON,1962,P195COMPLEXITYISTHUSAMATTERBOTHOFTHESHEERNUMBEROFDISTINCTPARTSTHESYSTEMCOMPRISESANDOFTHENATUREOFTHEINTERCONNECTIONSORINTERDEPENDENCIESAMONGTHOSEPARTSONEWAYTOMANAGECOMPLEXITY,THEN,ISTOREDUCETHENUMBEROFDISTINCTELEMENTSINTHESYSTEMBYGROUPINGELEMENTSINTOBYHIDINGELEMENTSWITHINASMALLERNUMBEROFSUBSYSTEMSSIMONARGUESFORTHECRITERIONOFDECOMPOSABILITYINMODULARDESIGN,WHICHHEOFFERSBOTHASAPRESCRIPTIONFORHUMANDESIGNERSANDASADESCRIPTIONOFTHESYSTEMSWEFINDREADYMADEINNATURETOMAKETHELATTERPOINTHEOFFERSTHEPARABLEOFTHEWATCHMAKERSTEMPUSANDHORABOTHMAKECOMPLICATEDWATCHSYSTEMSFROMMYRIADPARTS,ANDBOTHAREINTERRUPTEDFREQUENTLYINTHEIRWORKTEMPUSDOESNOTDESIGNHISWATCHESASDECOMPOSABLESYSTEMS,SOEVERYTIMEHEISINTERRUPTEDANDFORCEDTOSETASIDEHISWORK,THEENTIREUNFINISHEDASSEMBLYFALLSTOPIECESBYCONTRAST,HORAFIRSTBUILDSSTABLESUBASSEMBLIESTHATHECANTHENPUTTOGETHERINHIERARCHICFASHIONINTOLARGERSTABLESUBASSEMBLIESTHUS,WHENHORAISINTERRUPTED,ONLYTHELASTUNFINISHEDSUBASSEMBLYFALLSAPART,PRESERVINGMOSTOFHISEARLIERWORKINANEVOLUTIONARYSELECTIONENVIRONMENT,SUCHSTABILITYWOULDBEREWARDEDWITHSURVIVALSIMON,1962,PP200205LOASBY,1976INTHEEND,HOWEVER,WHATMAKESTEMPUSSUNFINISHEDWATCHESSOUNSTABLEISNOTTHESHEERNUMBEROFDISTINCTPARTSINVOLVEDRATHER,ITISTHEINTERDEPENDENCYAMONGTHEPARTSINHISDESIGNTHATCAUSETHEWATCHESTOFALLAPARTINANONDECOMPOSABLESYSTEM,THESUCCESSFULOPERATIONOFANYGIVENPARTISLIKELYTODEPENDONTHECHARACTERISTICSOFMANYOTHERPARTSTHROUGHOUTTHESYSTEMSOWHENSUCHASYSTEMISMISSINGPARTSBECAUSEITISNOTFINISHED,FOREXAMPLE,ORBECAUSESOMEOFTHEPARTSAREDAMAGED,THEWHOLECEASESTOFUNCTIONANDTHESYSTEMBECOMESEVOLUTIONARYSHARKBAITINADECOMPOSABLESYSTEM,BYCONTRAST,THEPROPERWORKINGOFAGIVENPARTWILLDEPENDWITHHIGHPROBABILITYONTHECHARACTERISTICSOFOTHERPARTSWITHINITSSUBASSEMBLYBUTWILLDEPENDWITHRELATIVELYLOWERPROBABILITYONTHECHARACTERISTICSOFPARTSOUTSIDEOFTHATSUBASSEMBLY2ASARESULT,ADECOMPOSABLESYSTEMMAYBEABLETOLIMPALONGEVENIFSOMESUBSYSTEMSAREDAMAGEDORINCOMPLETEINORGANIZATIONALANDSOCIALSYSTEMSANDPERHAPSEVENINMECHANICALONESASWELLITISPOSSIBLETOTHINKOFINTERDEPENDENCYANDINTERACTIONAMONGTHEPARTSASAMATTEROFINFORMATIONTRANSMISSIONORCOMMUNICATIONCONSIDER,WITHERICVONHIPPEL1990,THEPROBLEMOFORGANIZINGPRODUCTINNOVATIONHERE,THEISSUEISHOWTODECOMPOSETHEORGANIZATIONOFARESEARCHANDDEVELOPMENTPROJECTBYPARTITIONINGTASKSAMONGDEVELOPMENTTEAMSASVONHIPPELPOINTSOUT,INORDERTOSOLVETHISDECOMPOSITIONPROBLEM,ONEHASTOFOCUSONTHEINTERDEPENDENCIESAMONGTHEVARIOUSTASKSTHEPROJECTCOMPRISES3IFTHEPROJECTISORGANIZEDINANONDECOMPOSABLEWAY,THENINTERDEPENDENCYWILLBEHIGH,MEANINGTHATEACHDEVELOPMENTTEAMWILLNEEDCONSTANTLYTORECEIVEANDUSEINFORMATIONABOUTWHATALLTHEOTHERDEVELOPMENTTEAMSAREDOINGFOREXAMPLE,THEDEVELOPMENTOFTHEOS/360OPERATINGSYSTEMFORTHEORIGINALIBM360LINEOFCOMPUTERSWASEVIDENTLYORGANIZEDINARELATIVELYNONDECOMPOSABLEWAYTHEMANAGEROFTHEPROJECT,FREDERICKBROOKS,INSISTEDONACONSCIOUSATTENTIONTOINTERDEPENDENCIESANDAHIGHLEVELOFCOMMUNICATIONAMONGALLPARTICIPANTSTHISINCLUDEDTHECREATIONANDMAINTENANCEOFAFORMALPROJECTWORKBOOKTHATDOCUMENTEDEVERYASPECTOFTHESYSTEMSOTHAT,INPRINCIPLEATLEAST,EVERYWORKERCOULDDETERMINEHOWCHANGESELSEWHEREWOULDAFFECTHISORHERPARTOFTHEPROJECTBROOKSDECIDED“THATEACHPROGRAMMERSHOULDSEEALLTHEMATERIAL,IESHOULDHAVEACOPYOFTHEWORKBOOKINHISOWNOFFICE“BROOKS,1975,P76BUTWITHIN6MONTHS,THEREWASONESMALLPROBLEM“THEWORKBOOKWASABOUT5FTTHICKIFWEHADSTACKEDUPTHE100COPIESSERVINGPROGRAMMERSINOUROFFICESINMANHATTANSTIMELIFEBUILDING,THEYWOULDHAVETOWEREDABOVETHEBUILDINGITSELFFURTHERMORE,THEDAILYCHANGEDISTRIBUTIONSAVERAGED2IN,SOME150PAGESTOBEINTERFILEDINTHEWHOLEMAINTENANCEOFTHEWORKBOOKBEGANTOTAKEASIGNIFICANTTIMEFROMEACHWORKDAY“BROOKS,1975,P77THETEAMSOONSWITCHEDTOMICROFICHEAND,CLEARLY,WITHMODERNTECHNOLOGY,THEWORKBOOKCOULDRESIDEONLINEANDBEUPDATEDRAPIDLYBUTTHEPOINTREMAINSTHATANONDECOMPOSABLESYSTEMINCURSHIGHCOMMUNICATIONSCOSTINDEED,ITISANINSIGHTFORWHICHBROOKSISWELLKNOWNTHAT,INTHEDESIGNOFCOMPLEXSYSTEMS,THECOSTSOFCOMMUNICATIONAMONGWORKERSWILLEVENTUALLYOUTWEIGHTHEBENEFITSOFTHEDIVISIONOFLABORASMOREANDMOREWORKERSAREADDEDTOAPROJECTBROOKS,1975,PP1819ATONEPOINT,BROOKSBRIEFLYCONSIDERSA“RADICAL“ALTERNATIVEPROPOSEDBYDLPARNAS,WHOSE“THESISISTHATTHEPROGRAMMERISMOSTEFFECTIVEIFSHIELDEDFROM,RATHERTHANEXPOSEDTOTHEDETAILSOFCONSTRUCTIONOFSYSTEMPARTSOTHERTHANHISOWN“BROOKS,1975,P78THISRADICALALTERNATIVEISINFACTTHESTRATEGYOFSEEKINGDECOMPOSABILITYINTHEDESIGNOFTHEDEVELOPMENTPROJECTANDOFTHEUNDERLYINGSOFTWAREPARNAS1972ISTHEINVENTOROFTHENOTIONOFINFORMATIONHIDING,AKEYCONCEPTINTHEMODERNOBJECTORIENTEDAPPROACHTOCOMPUTERPROGRAMMINGPROGRAMMERSHADLONGUNDERSTOODTHEIMPORTANCEOFMODULARITY,THATIS,OFBREAKINGPROGRAMSINTOMANAGEABLEPIECESBUTAMODULARSYSTEMISNOTAUTOMATICALLYADECOMPOSABLEONE,SINCEONECANBREAKTHESYSTEMSINTOMODULESWHOSEINTERNALWORKINGSREMAINHIGHLYINTERDEPENDENTWITHTHEINTERNALWORKINGSOFOTHERMODULESPARNASARGUEDTHAT,ESPECIALLYINLARGEPROJECTS,PROGRAMMERSSHOULDABANDONMODULARIZATIONBASEDONSIMPLEFLOWCHARTSANDPAYATTENTIONINSTEADTOMINIMIZINGINTERDEPENDENCIESIFKNOWLEDGEISHIDDENORENCAPSULATEDWITHINAMODULE,THATKNOWLEDGECANNOTAFFECT,ANDTHEREFORE,NEEDNOTMUSTNOTBECOMMUNICATEDTOOTHERPARTSOFASYSTEMUNDERTHISSCHEME,EVERYMODULE“ISCHARACTERIZEDBYITSKNOWLEDGEOFADESIGNDECISIONWHICHITHIDESFROMALLOTHERSITSINTERFACEORDEFINITIONWASCHOSENTOREVEALASLITTLEASPOSSIBLEABOUTITSINNERWORKINGS“PARNAS,1972,P1056RECENTLY,BALDWINANDCLARK1997,P86HAVEDRAWNONSIMILARIDEASFROMCOMPUTERSCIENCETOFORMULATESOMEGENERALPRINCIPLESOFMODULARSYSTEMSDESIGNTHEDECOMPOSITIONOFASYSTEMINTOMODULES,THEYARGUE,SHOULDINVOLVETHEPARTITIONINGOFINFORMATIONINTOVISIBLEDESIGNRULESANDHIDDENDESIGNPARAMETERS4THEVISIBLEDESIGNRULESORVISIBLEINFORMATIONCONSISTOFTHREEPARTSANARCHITECTURESPECIFIESWHATMODULESWILLBEPARTOFTHESYSTEMANDWHATTHEIRFUNCTIONSWILLBEINTERFACESDESCRIBEINDETAILHOWTHEMODULESWILLINTERACT,INCLUDINGHOWTHEYFITTOGETHERANDCOMMUNICATEANDSTANDARDSTESTAMODULESCONFORMITYTODESIGNRULESANDMEASURETHEMODULESPERFORMANCERELATIVETOOTHERMODULESTHESEVISIBLEPIECESOFINFORMATIONNEEDTOBEWIDELYSHAREDANDCOMMUNICATEDBYCONTRAST,THEHIDDENDESIGNPARAMETERSAREENCAPSULATEDWITHINTHEMODULES,ANDTHEYNEEDNOTINDEED,SHOULDNOTBECOMMUNICATEDBEYONDTHEBOUNDARIESOFTHEMODULEASBALDWINANDCLARKPOINTOUT,THELITERATUREONMODULARSYSTEMSTENDSTOCOLLAPSETHESETHREEKINDSOFINFORMATIONTOGETHER,CALLINGTHEMALLEITHER“THEARCHITECTURE,“THEINTERFACES,“OR“THESTANDARDS“INORDERTOHAVEASINGLETERMFORALLTHREE,IWILLREFERTOASETOFARCHITECTURE,INTERFACES,ANDSTANDARDSASAMODULARIZATION3DESIGNPROCESSESCLEARLY,MODULARITYISADESIGNSTRUCTUREWITHAGREATMANYADVANTAGESBYREDUCINGTHEDEGREEOFINTERDEPENDENCYAMONG,ANDTHUSTHECOSTSOFCOMMUNICATINGACROSS,THEPARTSOFASYSTEM,ITGIVESFULLREINTOTHEMANYBENEFITSOFTHEDIVISIONOFLABORAMONGCOMPONENTSASUSUAL,HOWEVER,THEREISNOFREELUNCHITTURNSOUTTHATMODULARSYSTEMSAREMUCHMOREDIFFICULTTODESIGNTHANCOMPARABLEINTERCONNECTEDSYSTEMSTHEDESIGNERSOFMODULARSYSTEMSMUSTKNOWAGREATDEALABOUTTHEINNERWORKINGSOFTHEOVERALLPRODUCTORPROCESSINORDERTODEVELOPTHEVISIBLEDESIGNRULESNECESSARYTOMAKETHEMODULESFUNCTIONASAWHOLETHEYHAVETOSPECIFYTHOSERULESINADVANCEANDWHILEDESIGNSATTHEMODULARLEVELAREPROCEEDINGINDEPENDENTLY,ITMAYSEEMTHATALLISGOINGWELLPROBLEMSWITHINCOMPLETEORIMPERFECTMODULARIZATIONTENDTOAPPEARONLYWHENTHEMODULESCOMETOGETHERANDWORKPOORLYASANINTEGRATEDWHOLEBALDWINANDCLARK,1997,P86AWELLDECOMPOSEDMODULARSYSTEMMUSTPAYAKINDOFFIXEDCOSTTHATANINTERTWINEDSYSTEMNEEDNOTPAY,ANDTHISISTRUEWHETHERTHESYSTEMISBROUGHTTOUSBYTHEEVOLUTIONARYPROCESSORBYADESIGNTEAMATSONYUNDERSOMECIRCUMSTANCES,THEBENEFITSOFMODULARIZATIONMAYNOTBEWORTHTHECOSTFOREXAMPLE,ASYSTEMWHOSEENVIRONMENTNEVERCHANGESMAYNOTHAVETOWORRYMUCHABOUTMODULARIZATIONTEMPUSWILLDOASWELLASHORAIFNEITHERISEVERINTERRUPTEDSYSTEMSTHATDEVELOPSLOWLYINASLOWLYCHANGINGENVIRONMENTMAYNOTACQUIRE,ORREQUIRE,MUCHMODULARITYASWESAW,ANONDECOMPOSABLECOMPLEXSYSTEMTHATISCONSCIOUSLYDESIGNEDASBYADEVELOPMENTTEAMREQUIRESAGREATDEALOFCOMMUNICATIONAMONGTHEDESIGNERSINANOTHERSENSE,THESYSTEMITSELFALSODISPLAYSAGREATDEALOF“COMMUNICATION“AMONGTHEPARTS,INTHATTHEFUNCTIONINGOFONEPARTISHIGHLYDEPENDENTONTHEFUNCTIONINGOFPARTSELSEWHEREINTHESYSTEMBUTWHENASYSTEMISNOTCONSCIOUSLYDESIGNEDANDINSTEADDEVELOPSSLOWLYOVERTIME,LEARNINGCANTAKEPLACEINAWAYTHATINVOLVESFARLESSEXPLICITTRANSMISSIONOFINFORMATIONASALEXANDERSUGGESTSINTHECONTEXTOFARCHITECTUREANDURBANDESIGN,MANYOFTHEMOSTATTRACTIVEANDDURABLESYSTEMSARETHOSEOFTENTRADITIONALONESTHATDEVELOPTHROUGHAN“UNSELFCONSCIOUS“PROCESSWHETHERTHEOBJECTISABUILDINGORACOMPUTEROPERATINGSYSTEM,ADESIGNERMUSTSETFORTHDESIGNRULESEXPLICITLYANDCOMMUNICATETHEMCLEARLYINTHEUNSELFCONSCIOUSPROCESS,BYCONTRAST,“THERULESARENOTMADEEXPLICIT,BUTARE,ASITWEREREVEALEDTHROUGHTHECORRECTIONOFMISTAKES“ALEXANDER,1964,P35INCONSISTENCIESANDINTERDEPENDENCIESAREREVEALEDNOTBYEXANTECOMMUNICATIONBUTBYTRIALANDERROR5ALEXANDERSEEMSTOTHINKTHATTRADITIONALDESIGNSDEVELOPEDBYTHEUNSELFCONSCIOUSPROCESSWILLALSOTENDTOBEMODULARTHISCERTAINLYCANBESOTHEMODULARDESIGNOFTHEEARLIESTPCS,WHICHINFLUENCEDTHEDESIGNOFTHEIBMPC,WASNOTTHERESULTOFANYCONSCIOUSDESIGNLANGLOIS,1992ABUTITISBYNOMEANSOBVIOUSTHATUNSELFCONSCIOUSDESIGNMUSTALWAYS,OREVENUSUALLY,RESULTINMODULARITY6UNDERSTABLECONDITIONS,INDEED,ANONMODULARSYSTEMMAYPRESENTCERTAINADVANTAGESTOANUNSELFCONSCIOUSPROCESSOFTRIALANDERRORASBROOKSPOINTSOUTINCRITICIZINGTHEPARNASIANAPPROACHTOSOFTWARE,“AGOODINFORMATIONSYSTEMBOTHEXPOSESINTERFACEERRORSANDSTIMULATESTHEIRCORRECTION“BROOKS,1975,P78TOTHEEXTENTTHATANONDECOMPOSABLESYSTEMTENDSTOREVEALERRORSMOREQUICKLYANDMOREVISIBLY,SUCHASYSTEMMAYSTIMULATELEARNINGBYDOINGINAWAYTHATMODULARSYSTEMSDONOTTHISISINDEEDTHEBENEFITOFNONDECOMPOSABILITYTHATJAPANESEMANUFACTURINGSYSTEMSINCLUDINGJUSTINTIMEINVENTORYSYSTEMSARESAIDTOTAKEADVANTAGEOFITSINCETHEFAILUREOFANYONEPARTCANCAUSETOTALSYSTEMBREAKDOWN,NONDECOMPOSABILITYRAISESTHECOSTOFMISSINGORPOORLYFUNCTIONINGPARTS,WHICHINTURNRAISESTHEINCENTIVETOMAKESURETHATEACHPARTISOFHIGHQUALITYNONDECOMPOSABILITYALSOHIGHLIGHTSBOTTLENECKSANDINCONSISTENCIESONEWOULDEXPECT,HOWEVER,THATTHEBENEFITSOFNONDECOMPOSABILITYWOULDDOMINATETHOSEOFMODULARITYONLYFORSOMEKINDSOFRELATIVELYSTABLESYSTEMSWHEREFREQUENTCHANGEISNOTIMPORTANTALTHOUGHITDIDEVENTUALLYHAVESOMEMODULARASPECTS,HENRYFORDSPRODUCTIONSYSTEMFORTHEMODELTWASONTHEWHOLEAFINELYTUNEDANDNONDECOMPOSABLESYSTEMFORCRANKINGOUTLARGEVOLUMESOFANUNDIFFERENTIATEDPRODUCTINTHE1920S,THISSYSTEMCOULDNOTADAPTWELLTOTHECHANGEDMARKETCONDITIONSANDTHEMOREMODULARSTRATEGIESOFCOMPETITORS,NOTABLYGENERALMOTORSLANGLOISANDROBERTSON,1989HISTORYOFFERSMANYOTHEREXAMPLESOFNONDECOMPOSABLESYSTEMSTHATDEVELOPEDBYTRIALANDERRORINSTABLEENVIRONMENTS4ENCAPSULATIONBOUNDARIESINAWORLDOFCHANGE,MODULARITYISGENERALLYWORTHTHECOSTSTHEREALISSUEISNORMALLYNOTWHETHERTOBEMODULARBUTHOWTOBEMODULARWHICHMODULARIZATION,WHICHSTRUCTUREOFENCAPSULATIONBOUNDARIES,WILLYIELDTHEBESTSYSTEMDECOMPOSITIONTHEGOALISCLEARLYTOFINDTHEMODULARIZATIONTHATMINIMIZESINTERDEPENDENCIESANDMOSTCLEANLYDECOMPOSESTHESYSTEMBUTHOWTODOTHISHOWDOWEFINDTHE“NATURAL“ENCAPSULATIONBOUNDARIESWEWOULDTHINKITODDINDEEDTOASSIGNTWOINTERIORDESIGNERSEACHHALFOFAROOMVONHIPPEL,1990,P410ITMAKESAGOODDEALMORESENSEEITHERTOGIVEEACHDESIGNERAWHOLEROOMORTOGIVEUPENCAPSULATIONENTIRELYANDLETTHETWODESIGNERSCOMMUNICATEEXTENSIVELYTHEPROBLEMOFDEFININGBOUNDARIESOFENCAPSULATIONBECOMESEVENMORECHALLENGINGINADYNAMICSETTINGFOREXAMPLE,THETASKSINANINNOVATIVEDEVELOPMENTPROJECTCANNOTBEPARTITIONEDINADVANCE,SINCEKNOWLEDGEISCONTINUALLYCHANGING7INSUCHACASE,THEMODULARIZATIONOFTHESYSTEMTHEDEVELOPMENTPROJECTHASTOCHANGECONTINUALLYMOREOVER,THEMODULARIZATIONATANYPOINTHASTOTAKEINTOACCOUNTTHEINEVITABILITYOFREMODULARIZATIONASLEARNINGTAKESPLACEINROUTINEPROJECTSLIKESETTINGDESIGNERSTOWORKONAROOM,ITMAYBEPOSSIBLETOPREDICTWHICHTASKSWILLBECOMETHESOURCESOFNEWINFORMATIONBUTINGENUINELYNOVELPROJECTS,PREDICTIONBECOMESALLBUTIMPOSSIBLE8INDEED,UNPREDICTABLENOVELTYMAYMAKEANYHARDENCAPSULATIONUNDESIRABLE,CALLINGINSTEADFOR“LOOSELYCOUPLED“DEVELOPMENTTEAMSOFTHESORTEVIDENTLYFAVOREDBYJAPANESECOMPANIES9IMAIETAL,1985OFCOURSE,INNOVATIONNEEDNOTALWAYSREQUIREORIMPLYREMODULARIZATIONINSOMECASES,INDEED,AFIXEDANDPREDICTABLEMODULARIZATIONCANSPURINNOVATIONTHEPERSONALCOMPUTERISACASEINPOINTLANGLOISANDROBERTSON,1992,PP301302WITHTHEADVENTOFTHEIBMPCINTHEEARLY1980S,THEMICROCOMPUTERBECAMEAMODULARSYSTEMWITHARELATIVELYFIXEDORATLEASTSLOWLYCHANGINGARCHITECTURE,INTERFACES,ANDSTANDARDSDESPITEOR,RATHER,BECAUSEOFTHESLOWLYCHANGINGCHARACTEROFTHEPCSBASICSTRUCTURE,THEINDUSTRYEXPERIENCEDAPHENOMENALINCREASEINVALUEANDREDUCTIONINCOSTARISINGALMOSTENTIRELYFROMIMPROVEMENTSINMODULESMICROPROCESSOR,SOFTWARE,MODEMS,PERIPHERALS,ETCRATHERTHANFROMIMPROVEMENTSINTHEWAYTHEMODULESCONNECTTOGETHERINNOVATIONTHATTAKESPLACETHROUGHCHANGEINTHEMODULESWECANCALLMODULARINNOVATIONLANGLOISANDROBERTSON,1992,PP301302SANCHEZANDMAHONEY,1996,PP6869THISISINCONTRASTTOWHATHENDERSONANDCLARK1990CALLARCHITECTURALINNOVATION,INWHICHTHEPARTSREMAINTHESAMEBUTTHEARCHITECTURECONNECTINGTHEMCHANGESNOTICE,HOWEVER,THATARCHITECTURALINNOVATIONNEEDNOTALWAYSIMPLYACHANGEINTHESYSTEMSVISIBLEDESIGNRULESLEGOSANDTINKERTOYSARECLASSICMODULARSYSTEMSDESIGNEDFORARCHITECTURALINNOVATIONHERETHEARCHITECTURETHEWAYTHEUNCHANGINGPARTSARERECOMBINEDCANCHANGEWITHOUTAFUNDAMENTALCHANGEINTHEOVERALLMODULARIZATION10AND,INFACT,PERSONALCOMPUTERSALSOBENEFITFROMTHEMIXANDMATCHCAPABILITIESOFAMODULARSYSTEMTHATALLOWONETOCONFIGURETHESYSTEMTOTASTEASMUCHASTHEYDOFROMIMPROVEMENTINTHECONSTITUENTMODULESLANGLOISANDROBERTSON,1992SOMETIMES,HOWEVER,IMPROVINGTHEFUNCTIONINGOFASYSTEMCALLSFORREMODULARIZATIONRATHERTHANRECOMBINATIONSINCEAREMODULARIZATIONWILLRENDERTHEEXISTINGSTOCKOFMODULESINCOMPATIBLEORIRRELEVANT,SYSTEMICINNOVATIONCOMESATACOSTTHISINDEEDISONEOFTHECENTRALINSIGHTSOFTHEMUCHDISCUSSEDLITERATUREONPATHDEPENDENCYANDTECHNICALSTANDARDS11CANSYSTEMSGETSTUCKINANINFERIORMODULARIZATIONBECAUSEOFTHECOSTSOFREMODULARIZATIONTHEANSWERWILLNODOUBTDEPENDONTHECONTEXTARELATEDISSUEARISESINADYNAMICSETTINGASWEHAVESEEN,WELLDECOMPOSEDMODULARITYREQUIRESVISIBLEDESIGNRULESTHATAREFIXEDANDUNAMBIGUOUSIFTHEDESIGNRULESAREINFLUX,THEPOSSIBILITIESFORMODULARINNOVATIONANDMIXANDMATCHRECOMBINATIONWILLBELIMITEDONTHEOTHERHAND,FREEZINGTHEDESIGNRULESTOOEARLYMAYRESULTINANINFERIORMODULARIZATI
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負責。
- 6. 下載文件中如有侵權(quán)或不適當內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 幼兒工作計劃 個人
- 2025股權(quán)轉(zhuǎn)讓專項法律服務(wù)合同
- 2025版辦公室裝修合同范本
- 2025二手商品交易合同書模板
- 混凝土強度驗收
- 2025設(shè)備租賃合同示范文本
- 寶馬三系改色施工方案
- 凍品采購合同樣本
- 行業(yè)發(fā)展計劃推動技術(shù)創(chuàng)新
- 低價沙發(fā)轉(zhuǎn)讓合同樣本
- 【MOOC】書法鑒賞-浙江傳媒學院 中國大學慕課MOOC答案
- 水利工程資料員培訓課件
- 《史記》《漢書》第九-整本書閱讀《經(jīng)典常談》名著閱讀與練習
- 環(huán)衛(wèi)設(shè)施設(shè)備更新實施方案
- 機械制造技術(shù)基礎(chǔ)(課程課件完整版)
- 江西省南昌市高三二??荚嚨乩碓囶}
- 廣東省高州市2023-2024學年高一下學期期中考試數(shù)學
- 2024年高等教育文學類自考-06050人際關(guān)系心理學考試近5年真題附答案
- 福建省公路水運工程試驗檢測費用參考指標
- CBL聯(lián)合情景模擬人文護理查房
- 二級建造師繼續(xù)教育模擬考試題庫500題(含答案)
評論
0/150
提交評論