"56 Up" reminds us that change is ceaseless and often dramatic, bringing growth we could never have dreamed of as little kids.

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Establishing a separate supervisory institution would probably have required treaty change, which could have taken years to be ratified and may never have happened.

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Never could I have imagined the events that would open my eyes, fill my heart and change my life.

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Controlling the rate at which coins were created, he said, meant there would never be a surge or shortfall in the number of bitcoins in circulation, either one of which could rapidly change the value of each coin.

BBC: Rewards set to halve for digital money miners