Thereisnothinginthisworldconstantbutinconstancy.—SWIFT Projectafterprojectdesignsasetofalgorithmsandthenplungesintoconstructionofcustomer-deliverablesoftwareonaschedulethatdemandsdeliveryofthefirstthingbuilt.Inmostprojects,thefirstsystembuiltis()usable.Itmaybetooslow,toobig,awkwardtouse,orallthree.Thereisno()buttostartagain,smartingbutsmarter,andbuildaredesignedversioninwhichtheseproblemsaresolved.Thediscardand()maybedoneinonelump,oritmaybedonepiece-by-piece.Butalllarge-systemexperienceshowsthatitwillbedone.Whereanewsystemconceptornewtechnologyisused,onehastobuildasystemtothrowaway,foreventhebestplanningisnotsoomniscient(全知的)astogetitrightthefirsttime.Themanagementquestion,therefore,isnotwhethertobuildapilotsystemandthrowitaway.Youwilldothat.Theonlyquestioniswhethertoplaninadvancetobuilda(),ortopromisetodeliverthethrowawaytocustomers.Seenthisway,theanswerismuchclearer.Deliveringthatthrowawaytocustomersbuystime,butitdoessoonlyatthe(请作答此空)ofagony(极大痛苦)fortheuser,distractionforthebuilderswhiletheydotheredesign,andabadreputationfortheproductthatthebestredesignwillfindhardtolivedown.Henceplantothrowoneaway;youwill,anyhow.
A.worth B.value C.cost D.invaluable正确答案C
