Chief Executive Officer (CEO) of Twitter, Jack Dorsey, predicted that bitcoin will replace all the world currencies in the next 10 years. However, the candidate for the Governor of the Central Bank of San Francisco, John Williams, does not agree with Jack Dorsey's prediction.
John Williams explains that bitcoin can never replace paper money. Because many people question the usefulness of bitcoin, William says that digital money fluctuates, making it difficult to pay the right price for a particular item.