The basis for this statement is that contemporary literature provides no evidence whatsoever that there is any significant output cost from shifting the average inflation rate anywhere between 0% and 4%, while according to the standard macroeconomic rule called Okun's Law, having a 1% lower unemployment rate on average would bring an annual income benefit of some $20 billion, which is 2% of GDP, to Canada.
Par contre, d'après la règle macroéconomique normalisée dite loi d'Okun, avoir un taux de chômage moyen inférieur de 1 p. 100 entraînerait, pour le Canada, une amélioration annuelle du revenu d'environ 20 milliards de dollars, soit 2 p. 100 du PIB.