《BBC 地平线：我们身处哪个宇宙》是由内详主演的一部纪录片，Imagineaworldwheredinosaursstillwalktheearth.AworldwheretheGermanswonWorldWarIIandyouarepresidentoftheUnitedStates.Imagineaworldwherethelawsofphysicsnolongerapplyandwhereinfinitecopiesofyouareplayingouteverystorylineofyourlife.ItsoundslikeaplotstolenstraightfromHollywood,butfarfromit.Thisisthemultiverse.Untilveryrecentlythewholeideaofthemultiversewasdismissedasafantasy,butnowthisstrangestofideasisatthecuttingedgeofscience.Andforagrowingnumberofscientists,themultiverseistheonlywaywewillevertrulymakesenseoftheworldwearein.Horizonasksthequestion:Domultipleuniversesexist?Andifso,whichoneareweactuallyin?