The marriage between Mildred and Montag is normal within the confines of the dystopian society that Bradbury depicted in his book Fahrenheit 451. Simply put, they were both unconcerned for each other and were not interested in living their best lives.
According to Bradbury, they were not ideals, but people who had been shaped by the society in which they lived.
One of such societal factors was the large-scale desensitization of society and passivity.
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