Sometimes one agrees with a conclusion but realises the logic that was used to derive the conclusion was false. Which means that the person will get things wrong when applying the logic to other situations. This is almost always the case when we encounter the reasoning offered by so-called deficit doves. These are economists who do not out-rightly reject the use of deficits but typically believe them to be cyclical phenomenon only and should thus be offset at other points in the economic cycle by surpluses – the so-called balanced budget over the cycle rule. While many progressives think that is a sensible strategy – the reality is that it is an unsustainable fiscal rule to try to follow. The same economists talk about the dangers of pro-cyclical fiscal positions but fail to appreciate that such positions are desirable in certain cases and there is a fundamental asymmetry that applies to evaluation the desirability of a “cyclical” position. Fiscal austerity (pursuing surpluses when the economy is contracting) is never appropriate whereas expanding the deficit when the economy is growing might be. It all depends. This blog aims to clear up some of these misconceptions.