The greatest economic power might in fact remain in the hands of the Federal Reserve. Economists credit the Fed's policy of keeping interest rates at historic lows with helping to pump up the economy and bring unemployment down.

Unfortunately, I think it's very difficult to separate policy from politics. In a perfect world, in some instances, you probably would want to. In other instances, you'd probably say that the political element is important because it should, in a perfect world, match what the stakeholders need or want, or what the public is after.

Some billionaires like cars, yachts and private jets. Others like newspapers.

Bitcoin, in the short or even long term, may turn out be a good investment in the same way that anything that is rare can be considered valuable. Like baseball cards. Or a Picasso.

Bitcoin, in the short or even long term, may turn out be a good investment in the same way that anything that is rare can be considered valuable. Like baseball cards. Or a Picasso.