What are some reasons that an author might choose to violate the rules he or she has set up within a story? if possible please give an example. the rules are like a story taking place in 1973 then people show up with iphones blah blah blah breaking the rules

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in his speech "i have a dream," king states the plight of african americans, as he argues that after the civil war, slaves were promised equal rights and freedoms, but that these promises have not materialized.

he goes on to say that there are those who ask "when will you be satisfied? " implying that african americans alread enjoy a lot. in order to attack this argument, king lists examples of civil rights struggles that african americans still face, such as police brutality, segregation and racial prejudice.