There was an article a few weeks ago purporting to show that public deficit expansion (increased net public spending) has never worked. I won’t link to the article because I would not want the Magazine to get any advertising revenue via my blog and also because, frankly, the article is one of those reinvent history efforts – along the lines of when the facts do not align with theory the way forward is to just make up some new facts and deny what actually happened. But one of the examples use to justify the claim “Keynesian deficit spending … over and over again … has not worked” is the Ireland and Denmark experience in the 1980s when these nations “reduced their government budget deficits, which according to Keynesian theory should have depressed the economy. But on the contrary, the economies did particularly well”. This example is often used these days to justify the claim that deficit spending does not promote growth and fiscal austerity does not damage growth. However, no ‘Keynesian’ theory I know suggests that cutting the fiscal deficit will ‘depress’ the economy. It all depends … and that is what this article (like all the others that use this example) fails to recognise or admit. It bears also on current events in Canada and Argentina, which are demonstrating some other interesting facets of macroeconomics.