Many people around the world are already living in a cashless society. With the dominion of Visa and Mastercard showing no sign of shrinking, it's vital to scrutinise exactly what this shift means.<p>Brett Scott is an author and former banker, who is deeply committed to evaluating the grave dangers surrounding the removal of cash as a payment system. He sat down with Aaron to talk about bitcoin, gold and the central paradox at the heart of modern libertarianism.<p>You can find Brett's book here:
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