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Kant's Axe

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"If a sinister-looking man carrying an axe knocked on your door and asked where your best friend was, would it be morally acceptable to tell a lie?" German philosopher Immanuel Kant's opinion throws a spotlight on the differences between deontology and utilitarianism, explained in this video by BBC Radio 4.

Can you think of alternative ways to answer the sinister man at the door that neither violate Kant's categorical imperative nor potentially endanger your friend?

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