Who controlsGreek economic policy? It's hard to give a full answer to that question in this short space. Any half-decent attempt would have to mention Mario Draghi (president of the European Central Bank), the International Monetary Fund, and maybe throw in a nod to German chancellor Angela Merkel.
But I can tell you one thing for sure it's not the Greeks. If the Greeks want to keep the euro as their currency and despite everything, they keep voting as if they do then they have to do what the rest of Europe tells them.
Why am I bringing this up now? Because of the ridiculous debate over Scotland's currency. With less than a month to go until the independence referendum, the nationalists are falling over themselves to persuade voters in Scotland that they'll be able to keep the pound if they vote 'Yes' despite the resounding "Oh no, you won't" from every party in Westminster.
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So keen were they to give this impression that the Bank of England even had to give Scottish finance minister John Swinney a public telling off last week after he suggested that the nationalists had held entirely fictitious "technical discussions" with the central bank over a potential currency union.
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I don't want to run through the options for future currency arrangements yet again here we'll have a longer story on the implications of independence in the next few weeks. But what I find ridiculous is that the status of the pound should even be a debating point at this stage, let alone the definitive issue.
A country can't be fully independent if it doesn't have its own currency. The Greek experience makes that absolutely clear. For as long as it wants to hang on to the euro, everything from its employment policy to its tax-collecting arrangements to spending on public services is under scrutiny and dependent on the approval of people who aren't Greek voters.
So, anyone who genuinely wants independence for Scotland (I'm against it, but each to their own), should be appalled by the idea of keeping the pound.
Sure, I can understand why the nationalists might balk at the idea of publicly embracing a new Scottish currency.
It'd be a major step into the unknown. It would take a long time to prove itself on the global stage, and it would likely be extremely volatile, and horribly influenced by oil prices. Not to mention the hassle of changing money every time you crossed the border.
In short, it's not a vote winner. And that's the real problem. Because in between the unreconstructed Old Labour socialists at one end of Scotland's political spectrum, and the wishful-thinking of the 'Singapore of the North' camp at the other, there's a whole group of people for whom the Union basically works rather well.
And if they can't be convinced by honestly presented, warts-and-all policies, and have to be swayed by appeals to base tribalism and misty-eyed romance, then what sort of platform is that to launch a new start from?
