> It is pretty obvious from the preceding sentences that this is an opinion ... No, it was stated as though it were a fact that a currency requires the backing

> It is pretty obvious from the preceding sentences that this is an opinion ... No, it was stated as though it were a fact that a currency requires the backing of a central authority. It's a testable proposition, and the fact that Bitcoin exists and functions as a currency, and the fact that the present Fed chairperson asserts that the government has no authority to regulate Bitcoin, is the needed counter-citation. Link:http://www.theguardian.com/business/2014/feb/27/janet-yellen-federal-reserve-no-authority-regulate-bitcoin http://www.theguardian.com/business/2014/feb/27/janet-yellen... Quote: "The Federal Reserve has no authority to supervise or regulate Bitcoin, chair Janet Yellen told Congress on Thursday." So the original claim is false.