"It's a familiar story now: a meek and depressed high school chemistry teacher with terminal cancer cooks up a scheme to make and market a superior grade of methamphetamine to provide a nest egg for his family after he's gone. But over the course of five seasons Walter White goes from milquetoast to murderous in order to survive."

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The whole idea of what is evidence for causation in epidemiology cannot be separated from tTindustry understood that if they could raise doubt about how you could conclude something caused cancer, that they put so much effort into getting so many receptive public health authorities to say, "Well, causation requires that these five things be met." So that is, in fact, nonsense.

— Devra Davis