With the death of Margaret Thatcher, and the ensuing profusion of commentary on her legacy, it is worth looking back at an overlooked chapter in the Thatcher story. I am referring to her 1981 showdown with the Keynesian establishment—a showdown that the Iron Lady won handily. Before getting caught up with the phony “austerity vs. fiscal stimulus” debate, the chattering classes should take note of how Mrs. Thatcher debunked the Keynesian “fiscal factoid.”

According to the Oxford English Dictionary, a factoid is “an item of unreliable information that is reported and repeated so often that it becomes accepted as fact.” The standard Keynesian fiscal policy prescription for the maintenance of non-inflationary full employment is a fiscal factoid. The chattering classes can repeat this factoid on cue: to stimulate the economy, expand the government’s deficit (or shrink its surplus); and to rein in an overheated economy, shrink the government’s deficit (or expand its surplus).

Even the economic oracles embrace the fiscal factoid. That, of course, is one reason that the Keynesians’ fiscal mantra has become a factoid. No less than Nobelist Paul Krugman repeats it ad nauseam. Now, the new secretary of the treasury, Jack Lew (who claims no economic expertise), is in Europe peddling the fiscal factoid.

Unfortunately, the grim reaper finally caught up with Margaret Thatcher—but not before she laid waste to 364 wrong-headed British Keynesians.

In 1981, Prime Minister Thatcher made a dash for confidence and growth via a fiscal squeeze. To restart the economy, Mrs. Thatcher instituted a fierce attack on the British fiscal deficit, coupled with an expansionary monetary policy. Her moves were immediately condemned by 364 distinguished economists. In a letter to The Times, they wrote a knee-jerk Keynesian response: “Present policies will deepen the depression, erode the industrial base of our economy and threaten its social and political stability.”

Mrs. Thatcher was quickly vindicated. No sooner had the 364 affixed their signatures to that letter than the economy boomed. Confidence in the British economy was restored, and Mrs. Thatcher was able to introduce a long series of deep, free-market reforms.

As for the 364 economists (who included seventy-six present or past professors, a majority of the Chief Economic Advisors to the Government in the post-WWII period, and the president, as well as nine present or past vice-presidents, and the secretary general of the Royal Economic Society), they were not only wrong, but also came to look ridiculous.

In the United States, the peddlers of the fiscal factoid have never suffered the intellectual humiliation of their British counterparts. In consequence, American Keynesians can continue to peddle snake oil with reckless abandon and continue to influence policy in Washington, D.C., and elsewhere.

I have great fondness for Estonia, in part because it was the first post-communist nation to adopt the flat tax, but also because of the country’s remarkable scenery.

Most recently, though, I’ve been bragging about Estonia (along with Latvia and Lithuania, the other two Baltic nations) for implementing genuine spending cuts. I’ve argued that Estonia is showing how a government can reignite growth by reducing the burden of government.

Not surprisingly, some people disagree with my analysis. Paul Krugman of the New York Times criticized Estonia yesterday, writing that the Baltic nation suffered a “Depression-level slump” in 2008 and has only managed an “incomplete recovery” over the past few years.

He blames this supposedly weak performance on “austerity.”

I have a positive and negative reaction to Krugman’s post. My positive reaction is that he’s talking about a nation that actually has cut spending, so there’s real public-sector austerity (see Veronique de Rugy’s L.A. Times column to understand the critical difference between public-sector and private-sector austerity).

This is a sign of progress. In the past, he launched a silly attack on the U.K. for a “government pullback” that never happened, so what he wrote about Estonia at least is based on real events.

My negative reaction is that Krugman is very guilty of cherry-picking data. If you look at the chart that accompanies his post, Estonia’s economic performance isn’t very impressive, but that’s because he’s only showing us the data from 2007-present.

The numbers are accurate, but they’re designed to mislead rather than inform (sort of as if I did a chart showing 2009-present).

But before exposing that bit of trickery, there’s another mistake worth noting. Krugman presumably wants us to think that the downturn coincided with spending cuts. But his own chart shows that the economy hit the skids in 2008 - a year in which  government spending in Estonia soared by nearly 18 percent according to EU fiscal data!

It wasn’t until 2009 that Estonian lawmakers began to reduce the burden of spending. So I guess Professor Krugman wants us to believe that the economy tanked in 2008 because of expectations of 2009 austerity. Or something like that.

Returning now to my complaint about cherry picking data, Krugman makes Estonia seem stagnant by looking only at data starting in 2007. But as you can see from this second chart, Estonia’s long-run economic performance is quite exemplary. It has doubled its economic output in just 15 years according to the International Monetary Fund. Over that entire period - including the recent downturn, it has enjoyed one of the fastest growth rates in Europe.

This doesn’t mean Estonia is perfect. It did experience a credit/real estate bubble, and there was a deep recession when the bubble burst. And the politicians let government spending explode during the bubble years, almost doubling the budget between 2004 and 2008.

But Estonia reacted to the overspending and the downturn in a very responsible fashion. Instead of using the weak economy as an excuse to further expand the burden of government spending in hopes that Keynesian economics would magically work (after failing for Hoover and Roosevelt in the 1930s, Japan in the 1990s, Bush in 2008, and Obama in 2009), the Estonians realized that they needed to cut spending.

And now that spending has been curtailed, it’s worth noting that growth has resumed.

What makes Krugman’s rant especially amusing is that he wrote it just as the rest of the world is beginning to notice that Estonia is a role model. Here’s some of what CNBC just posted.

Sixteen months after it joined the struggling currency bloc, Estonia is booming. The economy grew 7.6 percent last year, five times the euro-zone average. Estonia is the only euro-zone country with a budget surplus. National debt is just 6 percent of GDP, compared to 81 percent in virtuous Germany, or 165 percent in Greece. Shoppers throng Nordic design shops and cool new restaurants in Tallinn, the medieval capital, and cutting-edge tech firms complain they can’t find people to fill their job vacancies. It all seems a long way from the gloom elsewhere in Europe. Estonia’s achievement is all the more remarkable when you consider that it was one of the countries hardest hit by the global financial crisis. …How did they bounce back? “I can answer in one word: austerity. Austerity, austerity, austerity,” says Peeter Koppel, investment strategist at the SEB Bank. …that’s not exactly the message that Europeans further south want to hear. …Estonia has also paid close attention to the fundamentals of establishing a favorable business environment: reducing and simplifying taxes, and making it easy and cheap to build companies.

Good policy makes a difference. But it also helps to have rational citizens (unlike France, where people vote for economic illiterates and protest against reality).

While spending cuts have triggered strikes, social unrest and the toppling of governments in countries from Ireland to Greece, Estonians have endured some of the harshest austerity measures with barely a murmur. They even re-elected the politicians that imposed them. “It was very difficult, but we managed it,” explains Economy Minister Juhan Parts. “Everybody had to give a little bit. Salaries paid out of the budget were all cut, but we cut ministers’ salaries by 20 percent and the average civil servants’ by 10 percent,” Parts told GlobalPost. …As well as slashing public sector wages, the government responded to the 2008 crisis by raising the pension age, making it harder to claim health benefits and reducing job protection — all measures that have been met with anger when proposed in Western Europe.

It’s worth noting, by the way, that government is still far too big in Estonia. The public sector consumes about 39 percent of economic output, almost double the burden of government spending in Hong Kong and Singapore.

But, unlike certain American politicians, at least the Estonians understand the problem and are taking steps to move in the right direction. I hope they continue.

P.S. The President of Estonia, a Social Democrat named Toomas Hendrik Ilves, used his twitter account to kick the you-know-what out of Krugman yesterday. For amusement value, check out this HuffingtonPost article.

P.P.S. A few other nations, such as Canada and New Zealand, also imposed genuine spending restraint in recent decades and they also got good results.

With both France and Greece deciding to jump out of the left-wing frying pan into the even-more-left-wing fire, European fiscal policy has become quite a controversial topic.

But I find this debate and discussion rather tedious and unrewarding, largely because it pits advocates of Keynesian spending (the so-called “growth” camp) against supporters of higher taxes (the “austerity” camp).

Since I’m a big fan of nations lowering taxes and reducing the burden of government spending, I would like to see the pro-tax hike and the pro-spending sides both lose (wasn’t that Kissinger’s attitude about the Iran-Iraq war?). Indeed, this is why I put together this matrix, to show that there is an alternative approach.

One of my many frustrations with this debate (Veronique de Rugy is similarly irritated) is that many observers make the absurd claim that Europe has implemented “spending cuts” and that this approach hasn’t worked.

Here is what Prof. Krugman just wrote about France.

The French are revolting. …Mr. Hollande’s victory means the end of “Merkozy,” the Franco-German axis that has enforced the austerity regime of the past two years. This would be a “dangerous” development if that strategy were working, or even had a reasonable chance of working. But it isn’t and doesn’t; it’s time to move on. …What’s wrong with the prescription of spending cuts as the remedy for Europe’s ills? One answer is that the confidence fairy doesn’t exist — that is, claims that slashing government spending would somehow encourage consumers and businesses to spend more have been overwhelmingly refuted by the experience of the past two years. So spending cuts in a depressed economy just make the depression deeper.

And he’s made similar assertions about the United Kingdom, complaining that, “the government of Prime Minister David Cameron chose instead to move to immediate, unforced austerity, in the belief that private spending would more than make up for the government’s pullback.”

So let’s take a look at the actual data and see how much “slashing” has been implemented in France and the United Kingdom. Here’s a chart with the latest data from the European Union.

I’m not sure how Krugman defines austerity, but it certainly doesn’t look like there’s been a lot of “slashing” in these two nations.

To be fair, government spending in the United Kingdom has grown a bit slower than inflation in the past couple of years, so one could say that there’s been a very modest bit of trimming.

There’s been no fiscal restraint in France, however, even if one uses that more relaxed definition of a cut. The only accurate claim that can be made about France is that the burden of government spending hasn’t been growing quite as fast since the crisis began as it was growing in the preceding years.

This doesn’t mean there haven’t been any spending cuts in Europe. The Greek and Spanish governments actually cut spending in 2010 and 2011, and Portugal reduced outlays in 2011.

But you can see from this chart, which looks at all the PIIGS (Portugal, Italy, Ireland, Greece, and Spain), that the spending cuts have been very modest, and only came after years of profligacy. Indeed, Greece is the only nation to actually cut spending over the 3-year period since the crisis began.

Krugman would argue, of course, that the PIIGS are suffering because of the spending cuts. And since there actually have been spending cuts in the last year or two in these nations, does that justify his claims?

Yes and no. I don’t agree with the Keynesian theory, but that doesn’t mean it is easy or painless to shrink the burden of government. As I wrote earlier this year, “…the economy does hit a short-run speed bump when the public sector is pruned. Simply stated, there will be transitional costs when the burden of public spending is reduced. Only in economics textbooks is it possible to seamlessly and immediately reallocate resources.”

What I would argue, though, is that these nations have no choice but to bite the bullet and reduce the burden of government. The only other alternative is to somehow convince taxpayers in other nations to make the debt bubble even bigger with more bailouts and transfers. But that just makes the eventual day of reckoning that much more painful.

Additionally, I think much of the economic pain in these nations is the result of the large tax increases that have been imposed, including higher income tax rates, higher value-added taxes, and various other levies that reduce the incentive to engage in productive behavior.

So what’s the best path going forward? The best approach is to implement deep and meaningful spending cuts, and I think the Baltic nations of Estonia, Lithuania, and Latvia are positive role models in this regard. Let’s look at what they’ve done in recent years.

As you can see from the chart, the burden of government spending was rising at a reckless rate before the crisis. But once the crisis hit, the Baltic nations hit the brakes and imposed genuine spending cuts.

The Baltic nations went through a rough patch when this happened, particularly since they also had their versions of a real estate bubble. But, as I’ve already argued, I think the “cold turkey” or “take the band-aid off quickly” approach has paid dividends.

The key question is whether nations can maintain spending restraint, particularly when (if?) the economy begins to grow again.

Even a basket case like Greece can put itself on a good path if it follows Mitchell’s Golden Rule and simply makes sure that government spending, in the long run, grows slower than the private economy.

The way to make that happen is to implement something similar to the Swiss Debt Brake, which effectively acts as an annual cap on the growth of government.

In the long run, of course, the goal should be to shrink the overall burden of government to its growth-maximizing level.