Randy Mahar
Randy Mahar asked Lee Child:

In many of your books, math is prominent as a component to solving issues or actions in everyday life, well Jack Reacher's everyday life anyway. How did it come to be such a part of Jack's deductive reasoning? Is or was math a big part of your development growing up?

Lee Child I love numbers. Probably more than math itself which I’m no expert in, I love number-related trivia. It only made sense to use that knowledge in the books.
Lee Child

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