Bitcoin is on a spectacular roll. A year ago, one unit of the cryptocurrency cost around $10,000, while on Monday of this week it cost over $57,000 before falling over 20 per cent to around $45,500 by Tuesday. That says something in itself. Such an extraordinary rollercoaster has understandably generated widespread debate. From day-traders to institutional investors, from Central Bankers to Hedge Funds, the debate on whether this volatile phenomenon should be treated as a new asset class, a new store of value, or just the frothiest expression of a dangerous financial bubble is growing more heated. Charlie Munger is…