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So, the choice that Alex's grandfather made--
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to point out his friend, Herschel,
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as a Jew and to thus give him up to the murderous Nazis--
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this is somehow played out
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in the dysfunctionality of the family in the present,
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in the terrible rages and drunkenness of the father.
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It's interesting to me
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that this novel
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is about making the relationship between grandchildren and grandparents
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as immediate as possible,
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and so I think it's really interesting
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that we have Alex disowning his father.