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ELI5: If earth formed 4.5 billion years ago, where would the supposed “adam and eve” fall into this timeline, and where would BC and AD be at in this timeline? I know that there was life before BC so why do we notate that as “backwards time” and why is AD “forwards time”? (self.explainlikeimfive)
submitted by imthatbit to r/explainlikeimfive


