 particular wave function and call it the actual and nomologically necessary initial wave function of the universe. But that would not work. Typical wave functions of the universe contain too much information that they will in general be extremely complicated. It is unlikely that a simple law can pick out any of those complicated wave functions. In this section, we outline a new version of many-worlds interpretation whose laws are strongly deterministic and simple. The laws will be: the von Neuman equation that generalizes the Schrödinger equation, the Initial Project Hypothesis that replaces the Past Hypothesis, and possibly an additional matter-density equation. To appreciate the new version of many worlds interpretation of quantum mechanics, we need to introduce some background about the arrows of time. We see the manifestation of arrows of time everywhere. Many processes in nature typically happen in only one direction: they are time-asymmetric. In room temperature, the ice cubes in the past are always larger than the ice cubes in the future; bananas are more ripe in the future than in the past; people are more wrinkled in the future than in the past. However, the fundamental dynamical laws of physics are (essentially) symmetric between the past and the future. Take for example the conjunction of Newton's equation of motion F = ma and law for universal gravitation F = Gm1m2/r2, whatever can happen forward can as easily happen backward. The same is more or less true for the Schrödinger equation and special and general relativity. So the explanation for the arrows of time plausibly come from elsewhere. One prominent explanation, first proposed by Boltzmann (1995) (published first in 1899), invokes what is now called the Past Hypothesis-the universe in the beginning had very low entropy, where entropy is a measure of disorder. Given a low-entropy initial macrostate, the universe will typically develop in such a way to exemplify arrows of time in its typical subsystems. That is, typically, typical subsystems of the universe are entropic. Modern developments of Boltzmann's ideas in the foundations of statistical mechanics further substantiate this idea. The Past Hypothesis is still compatible with infinitely many initial microstates. It is reasonable to assume that some of them will lead to anti-entropic behaviors (e.g. ice cubes will become larger in room temperature). To solve this problem, it is essential to have the Statistical Postulate according to which these anti-entropic initial states have relatively small measure-they are atypical. Albert (2015) and
particular wave function and call it the actual and nomologically necessary initial wave function of the population. But that would not ferment. Typical wave functions of the population contain besides much information that they will in general be highly complicated. It is improbable that a simple jurisprudence can pick out any of those complicated wave functions. In this incision, we outline a new interpretation of many - worlds interpretation whose laws are strongly deterministic and simple. The torah will be: the von Neuman equation that generalizes the Schrödinger equation, the Initial Project Hypothesis that substitute the Past Hypothesis, and possibly an additional matter - density equation. To appreciate the fresh version of many worlds interpretation of quantum mechanics, we need to bring in some background about the arrows of time. We see the manifestation of arrow of time everywhere. Many processes in nature typically happen in only one direction: they are time - asymmetric. In room temperature, the ice cubes in the past are always larger than the frosting cubes in the future; bananas are more advanced in the future than in the past; citizenry are more wrinkled in the future than in the past. However, the fundamental dynamical law of physics are (essentially) symmetric between the past and the future. Take for example the junction of Newton's equation of motion F = ma and law for universal gravitation F = Gm1m2 / r2, whatever can happen ahead can as easily happen backward. The like is more or less true for the Schrödinger equality and special and general relativity. So the explanation for the arrows of time plausibly derive from elsewhere. One prominent explanation, first proposed by Boltzmann (1995) (publish first in 1899), invokes what is now called the Past Hypothesis - the population in the beginning had very low entropy, where entropy is a measure of disorderliness. Given a low - entropy initial macrostate, the universe will typically explicate in such a way to exemplify arrow of time in its typical subsystems. That is, typically, typical subsystems of the population are entropic. Modern developments of Boltzmann's ideas in the foundation of statistical mechanics further substantiate this idea. The Past Hypothesis is still compatible with boundlessly many initial microstates. It is reasonable to assume that some of them will conduct to anti - entropic behaviors (e.g. ice cubes will become larger in room temperature). To solve this problem, it is substantive to have the Statistical Postulate according to which these anti - entropic initial states have relatively small measure - they are atypical. Albert (2015) and
 pagticular wave function akd call it the aerual aid nomomogicallh necessary initial wave funrtiob of uke universe. But that would non work. Typicao wave funcvjons of the uhlversz rontain too mucm informatimn that they whlu nn general be extremely complicated. Yt is umllkely that a symplt lww czn pick out any of those complicatsd wave functions. In this section, we outline a new version of many-woglds interptstaeuon whose lads are strongly determjnistic and simple. The laws wilu be: che von Neunab eeoation that jenerajizes the Scmgödinger equatipn, the Initial Prmjext Hypothesis that re'laces the Past Hypojhesis, and pkssibly an additiinql majter-dansigt eduauioi. Tk apprfciete the new version of many worlds interpteeqtion of quanfum meshwnics, we need to introduce some backgrolnd zbout the arrows of timw. We see the manifestwtion of wrrows of time everywhere. Many processes in natura typmcxllv happdb ln only one direction: they are time-asymmetric. Jn rpom temperaturc, the ice cubes in tje kast are alwayr largzd fhan the ice cubes in the futuee; bananaf arr more ripe in the future tyan in the pcst; people are more wxinkled in tke futore thsn in the past. However, che fuhdamental djnamical mxws of physics afe (vssettially) symmetric between ehe past end tke futurd. Tale for example tje cokbunction of Newton'd equction of motion F = ma and law for universal gretitation F = Gk1m2/s2, wvatever ean haipen forward cag as easily hakpen backcard. Tfe same is more oc less true sor the Schrödhjger equatioi and spesial and generau relativity. So the explcuation foe the arrows of tike klzusibly come frim tlwewhere. One prpmivene vxpkagdtion, first [ropusea by Bultzmann (1995) (pmblkshec first in 1899), invokes fhat is now called the Pwst Hypojhesis-the universe in yhe beginning had gery now entrppy, where entropy is a measure of disorder. Giyen a low-entrjpy lnityal macroscate, the universe will typically develop in such a way to wxemplify arrows of uime in its tbpical subsysteks. That is, typically, typical subsysteks of the universe ars entrmpic. Lodern developments of Boltzmann's ideas in the foundations of statistical mechaiiss further aubsyantidtz tkis idew. Thx 'ast Hypothesis ix still compatible with infinitxly many iticial microstates. It is reasonsbue to assume jhat some of them will leas to anto-entropic behaviors (e.g. ice cubex will become larger in voom tempwratude). To solvx this problem, it is essencial ti have rhe Dtatistical Pustilwte accorfing tk which these anti-entropic initiql stared have relativelb small measmrt-they ate atypisal. Albert (2015) and
particular wave function and call it the nomologically initial wave of the universe. Typical functions of the contain too much that they will in general be complicated. It is unlikely that a simple law can pick out any of complicated wave functions. In this section, we outline a new version of many-worlds whose are deterministic simple. The laws will be: the von Neuman equation that generalizes the Schrödinger equation, the Initial Hypothesis that replaces the Past Hypothesis, and possibly additional matter-density equation. To the new version of many interpretation quantum mechanics, need introduce background about the of time. We see the manifestation of arrows of time everywhere. Many processes in nature typically happen only one are time-asymmetric. room the cubes in the always larger than the ice cubes bananas are more ripe in the future than the past; are more wrinkled in the future in the past. However, the fundamental dynamical laws physics are (essentially) symmetric between the past and the future. Take for example the conjunction equation of motion F ma and law universal F Gm1m2/r2, can happen can as easily happen backward. The same is more or less for the Schrödinger equation and special and general relativity. So for arrows of time come from elsewhere. One explanation, proposed by Boltzmann (1995) in invokes called Past universe in the beginning very low entropy, where entropy a measure of disorder. the universe will typically develop in such a to exemplify arrows of time in its subsystems. That is, typically, typical subsystems of the universe are entropic. Modern of Boltzmann's the foundations of statistical mechanics further substantiate this The Past Hypothesis is compatible with infinitely many initial microstates. It is reasonable assume some of will lead to behaviors (e.g. ice will become larger temperature). To this it have the Statistical Postulate according to these initial states have relatively small are (2015) and
 particular wave function and Call it the aCtual And NomOlOgicAlly Necessary initiAL wavE function of the universe. but thAt WOuld NOt Work. TYpical wAVe FUNctIoNs Of tHe UNiVerse ConTain too Much informAtiOn That they will IN gEneral be exTreMely complicaTed. it is unLiKelY That a SimPle laW can piCK out anY of those cOmPLicateD Wave funCTIoNs. In This section, we outlINe A New version of maNy-worlDs INtERPreTatIon whose laWs Are stROngly deTErMINIstIC and simple. The Laws will be: tHE voN NeumaN eQuaTIon thaT geneRaLIzeS the SchrödiNger Equation, tHe InitIAl ProjeCT HypothEsis thAt rEplAces THe paSt HYpOTheSIs, And POssIbly an adDiTiOnal mAtteR-DENSity EquAtioN. To apPreciate the neW veRsioN Of mAny woRlds iNterPrEtatiOn of quAntum MeChanics, we need to IntrOduce some BacKgRouNd About THe arroWs oF tiMe. We see The maniFEstAtION Of Arrows of time everywHeRE. maNy procesSes in nATuRe TYpically HaPpeN in oNLY one dIrecTIoN: they are Time-asYMmEtRic. In roOm TemperAtUre, The Ice cuBEs in The pasT are alwaYs larGEr than the ice cuBEs in the future; BAnANAs ARe moRe rIpe in the futUre tHAn in The pASt; PeoPLe are More wRiNKlED in the future than in tHe Past. HoWever, The fundamentaL dynamical LAWS of physiCs arE (EsSEntially) symmetRic beTween the paST and the fUture. take for eXample the CONjunctioN of newTon'S eqUATiOn of motion F = ma AND law FoR univerSal GravitaTioN F = GM1m2/r2, WhaTeVer can hapPen forwaRd CaN aS eAsiLy hapPEn backwaRd. the SaMe iS more OR less tRue foR the scHrÖDinGer equaTIoN ANd spEcIaL and GenErAl relAtivITy. SO the expLanation fOr tHE arrOwS oF time plAusibly come frOm Elsewhere. ONe ProMinent EXPlanatioN, first proposed by BoltzmaNN (1995) (publisHed First In 1899), inVokes what Is nOw callEd tHE Past HYpotheSis-thE uNivERSe in tHE BeGinNiNg had very lOW EntRopy, wHeRe enTropy is A measure of disorder. gIveN a low-entropy iNitIal mACRoStaTE, tHE unIvERse WILl typically deveLop in such a WaY To Exemplify aRRowS oF time in Its typiCal suBSystems. that is, typIcally, typIcAl suBSYstEms of the unIverse arE entropic. mOdern DEvElopmEntS of BolTzManN's ideAs in thE FouNdatiOns of sTaTisticAl mecHaNics furtHer substantiate this idea. the PasT HypoTheSis is stilL coMPatIble with iNfinItely many iNitIal MicroStaTEs. It iS reaSOnAblE To assUme tHAt some of tHEm WilL LEaD to anti-entrOPIC beHavioRs (e.G. Ice cubEs wiLl become larger in rOOm temperature). TO solVE ThiS prOBlem, It Is essential to hAve ThE sTatisticAl postulate acCording tO wHIch thEse antI-entroPic initIAL sTAtes haVe reLatIvely smalL meAsURe-they aRe AtYPical. ALberT (2015) aNd
 particular wave functionand call i t the  ac tua landnomo logically nece s sary  initial wave function  of t he univ e rs e. Bu t thatw ou l d  no two rk.  T y pi cal w ave  functi ons of the  un iv erse contain to o much inf orm ation that t hey  willin  ge n eralbeextre mely c o mplica ted. It i su nlikel y  that a s im plelaw can pick outa ny of those compl icated  w a ve f unc tio ns. In thi ssecti o n, we o u tl i n e  an ew version of  many-world s  in terpre ta tio n  whose  laws  a r e s trongly det ermi nistic an d simp l e. Thel aws wil l be:the  vo n Ne u ma nequ at i ont ha t g e ner alizes t he  S chröd inge r e q uati on,  the  Init ial Project H ypo thes i s t hat r eplac es t he  Past  Hypot hesis ,and possibly an  add itional m att er -de ns ity e q uation . T o a pprecia te then ewve r s i on  of many worlds in te r p re tation o f quan t um  m e chanics,  w e n eedt o  intr oduc e  s ome back ground ab ou t the a rr ows of  t ime . W e see themanife stationof ar r ows of time ev e rywhere. Many pr o c es s es i n n ature typic ally happ en i n  o nly one d irect io n :t hey are time-asymme tr ic. In  room  temperature,  the ice c u b e s in the  pas t  a r e always large r tha n the icec ubes inthe f uture; b ananas ar e more rip e i n t hefut u r ethan in the p a s t; p eo ple are  mo re wrin kle d i n t hefu ture than  in thepa st .Ho wev er, t h e fundam en tal  d yna mical laws o f phy sics  a re (es sential l y) s ymme tr ic  bet wee nthe p asta ndthe fut ure. Take  fo r  exa mp le  the co njunction ofNe wton's equ at ion  of mo t i on F = m a and law for universal gravita tio n F =  Gm1 m2/r2, wh ate ver ca n h a ppen f orward  canas  ea s i ly ha p p en  ba ck ward. Thes a meis mo re  orless tr ue for the Schrödi n ger  equation and  sp ecia l an d g e ne r alre l ati v i ty. So the expl anation fo rt he  arrows of tim eplausib ly come  from elsewhe re. One p rominentex plan a t ion , first pr oposed b y Boltzma n n (19 9 5)  (pub lis hed fi rs t i n 189 9), in v oke s wha t is n ow  calle d the  P ast Hypo thesis-the universe inthe be ginni nghad verylow ent ropy, whe re e ntropy isa m eas ure o f d i sorde r. G i ve n a low-e ntro p y initial ma cro s t at e, the univ e r s e w ill t ypi c ally d evel op in such a wayt o exemplify ar rows o f t ime in i ts  typical subsy ste ms . That is,  t ypically, t ypical s ub s ystem s of t he uni verse a r e  e n tropic . Mo der n develop men ts of Bolt zm an n 's ide as i nthe fo undati o ns o f statistical mech anics f urthe r  su bstan ti ate thi s  ide a. The Pas t Hypothesi s is s till  comp atiblewi th inf ini te ly many in i tial micr ostat es. Itis  rea son able t o as s u me th at s om e o f them wi l l  l e ad  t o  an ti-e ntrop ic  beh aviors (e . g. ice c ube s  will b ec ome l argeri nr o om tempera tur e). T o solve this prob l em ,  it i s esse ntialto have the  S tatisti cal P ostulateaccording towh ichthese an ti -ent ro pic  i nitial states h ave rela tively s m a ll mea sur e -the y  are a ty pical. Alber t (20 15 )  and
 particular_wave function_and call it the_actual and_nomologically_necessary initial_wave_function of the_universe. But that_would not work. Typical_wave functions of_the_universe contain too much information that they will in general be extremely complicated. It_is_unlikely that_a_simple_law can pick out any_of those complicated wave functions._In this_section, we outline a new version of many-worlds_interpretation_whose laws are_strongly deterministic and simple. The laws will be: the_von Neuman equation that generalizes the_Schrödinger equation, the_Initial_Project_Hypothesis that replaces the_Past Hypothesis, and possibly an additional_matter-density equation. To appreciate the new_version of many worlds interpretation of quantum_mechanics, we need to introduce some_background about the arrows of_time. We_see the manifestation of arrows_of time everywhere._Many processes_in nature typically_happen in only one direction: they_are time-asymmetric. In_room temperature, the ice cubes in_the_past are always_larger_than_the ice_cubes in the_future;_bananas are_more_ripe in the future than in_the_past; people are more wrinkled in the_future than in the_past._However, the fundamental dynamical_laws of physics are (essentially)_symmetric between the past and the_future. Take_for example_the conjunction of Newton's equation of motion F = ma and_law for universal gravitation F =_Gm1m2/r2, whatever can happen_forward can_as_easily happen backward._The_same is_more or less true for the Schrödinger_equation and_special and general relativity. So the_explanation for the arrows_of_time plausibly come from elsewhere. One_prominent explanation, first proposed by Boltzmann_(1995) (published first in 1899),_invokes_what_is now called the Past_Hypothesis-the universe in the beginning had_very low entropy,_where entropy is a measure of disorder._Given_a low-entropy initial macrostate, the universe_will_typically develop in such a way_to_exemplify_arrows of time in its_typical subsystems. That is, typically, typical_subsystems of the universe are entropic. Modern developments of_Boltzmann's ideas in_the foundations of statistical mechanics_further_substantiate_this idea. The Past Hypothesis is still compatible with infinitely_many initial_microstates. It is_reasonable to assume that some of them will lead to_anti-entropic behaviors (e.g. ice cubes will become_larger in room temperature). To solve this problem, it is essential_to have the Statistical Postulate according to which_these anti-entropic initial states have relatively small_measure-they are atypical. Albert_(2015)_and