7/28/2019 Critical Context Essaybuildatimemachine
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CriticalContextEssayanalysis,presentationsandapplicationtothestories
Usetheseoutlinestoaidyourunderstandingofthecriticalessays.
Thenaddyournotesandnotesfrom
othermembersofyourgrouptocreateyouroverviewforyourclasspresentation.
HavethissheethandyasyoureadeachstoryintheTimesection,lookingforpartsthatapply.
ToBuildaTimeMachinebyMichioKaku
PointsofViewandPerspectivesEinsteinstheoryofspecialrelativity
Einsteinstheoryofgeneralrelativity
QuantumPhysics
StringTheory
ThesisTime
travel
is
theoretically
possiblethough
probably
not
practically
or
economically
possible
until
an
arbitraryfuturecivilizationthatcanbuildthemachine.
Supportingpoints TimeTravel
o
Thefasterthanlighttravelmethodpreferredbymostsciencefictionwriterscontradictsthespecialtheoryofrelativity
o Thegeneraltheoryofrelativitymaypermittimetravelo
Quantumtheorytakesoverfromgeneralrelativitytosupportthepossibilityoftimetravel.
o Hyperspacetheorycansettlethequestion.
BecausebothquantumtheoryandEinsteinstheoryofgravityareunitedintendimensionalspace,weexpectthatthequestionoftimetravelwillbesettledecisivelybythehyperspacetheory.
(68788)
CollapseofCausalityo
Iftimetravelispossiblethenthelawsofcausalitycrumble. (688)o
StephenHawkingbelievesthattimetravelisnotpossiblethethefactthatwehavenotbeeninvadedbyhordesoftouristsfromthefuture.
(689)
TimeParadoxeso Meetingyourparentsbeforeyouareborno
Themanwithnopast(689)
Worldlineso
Ahumanbeingcanbedefinedasatemporarycollectionofworldlinesofmolecules.Thesewouldlineswerescatteredbeforewewereborn,cametogethertoformour
bodies,andwillrescatterafterwedie.
o Theworldlineoftheinventoroftimetravelisaclosedloop.
Hisworldlinefulfills,ratherthanchanges,thepast.
SpoilerofArithmeticandGeneralRelativityo Thissentenceisfalse.
Ifthesentenceistrue,thenitfollowsthatitisfalse.
Ifthesentenceisfalse,thenthesentenceistrue. (693)
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o
Bymakingaroundtriponarocketshipinasufficientlywidecurve,itispossibleinthese[particle]worldstotravelintoaregionofthepast,present,andfuture,andbackagain.
(694)
LivingintheTwilightZoneo
TheNUThypothesisthateverywormholesolutiontoEinsteinsequationscouldbeshowntoallowsomeformoftimetravel.(695)
o
EinsteinsequationswerelikeaTrojanhorseinsidelurkallsortsofstrangedemons,whichallowforthepossibilityofinterstellartravelthroughwormholesandtimetravel.
(696)
ToBuildaTimeMachineo
FindasolutiontoEinsteinsequationsinwhichaspacetravelerwouldnotbetornapartbythetidaleffectsoftheintensegravitationalfield.
(697)
o
Provethatitwasscientificallyfeasible,notthatitwaseconomicalorwithintheboundsofpresentdayearthscience(698)
o Thesolutionisthetransversiblewormhole.(698)o
TheClosedTimelineCurves(CTCs)thatappearinthewormholeseemtofulfillthepastratherthanchangeitorinitiatetimeparadoxes.
(699)
BlueprintforaTimeMachineo
Energymustbetemporarilynegativefortimetraveltobesuccessful.o
Quantumtheorymakenegativeenergypossibleo
StringtheoryisafullyquantummechanicaltheorythatincludesEinsteinstheoryofgeneralrelativityasasubset,socanbeusedtocalculatecorrectiontotheoriginal
wormholetheory.
Thus,theaveragedweakenergycondition(AWEC)conditionis
physicallyrealizable. (701)
