TheElegantUniverse:Superstrings,HiddenDimensions,andtheQuestfortheUltimateTheoryBrianGreeneContentsPrefacePartI::TheDilemmaofSpace,Time,,Time,:::"Super"::InSearchofM-:AString/M-:UnificationintheTwenty--booknotesPrefaceDuringthelastthirtyyearsofhislife,AlbertEinsteinsoughtrelentlesslyforaso-calledunifiedfieldtheory—atheorycapableofdescribingnature'sforceswithinasingle,all-passing,,,hewasdrivenbyapassionatebeliefthatthedeepestunderstandingoftheuniversewouldrevealitstruestwonder:,,inlargepartbecausethedeckwasstackedagainsthim:Inhisday,anumberofessentialfeaturesofmatterandtheforcesofnaturewereeitherunknownor,atbest,-century,physicistsofeachnewgeneration—throughfitsandstarts,anddiversionsdownblindalleys—,longafterEinsteinarticulatedhisquestforaunifiedtheorybutcameupempty-handed,physicistsbelievetheyhavefinallyfoundaframeworkforstitchingtheseinsightsto
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