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Everything in a story has to matter. If you write alternate history, the alternate has to matter to the story. If you put in a detail that is obviously and deliberately contrary to history (as oppo...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/34299 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/34299 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
Everything in a story has to matter. If you write alternate history, the alternate has to matter to the story. If you put in a detail that is obviously and deliberately contrary to history (as opposed to an accidental anachronism, which you will find in many books if you look hard enough) then it is alternate history. And if it is alternate history in which the alternate history does not matter, it is just plain weird.