简介：Imagineaworldwheredinosaursstillwalktheearth.AworldwheretheGermanswonWorldWarIIandyouarepresidentoftheUnitedStates.Imagineaworldwherethelawsofphysicsnolongerapplyandwhereinfinitecopiesofyouareplayingouteverystorylineofyourlife.ItsoundslikeaplotstolenstraightfromHollywoodbutfarfromit.Thisisthemultiverse.Untilveryrecentlythewholeideaofthemultiversewasdismissedasafantasybutnowthisstrangestofideasisatthecuttingedgeofscience.Andforagrowingnumberofscientiststhemultiverseistheonlywaywewillevertrulymakesenseoftheworldwearein.Horizonasksthequestion:Domultipleuniversesexist?Andifsowhichoneareweactuallyin?