if you could actually travel back in time th present which pecomes the future and the past becomes ur present,if youu actually manage to change something in the past the present(future) whuch you were will gwt affected but it becomes another dimension and u have to live from the exact time you were but twicw hence giving u a different future. the future from which u came from will become a drift in time making it another dimension
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---------------------------- diversion of time line
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