I agree that it’s a strong article from @Exapno_Mapcase in the OP. It hits most of the right points. The optimal inflation rate is not 0%. Given the supply chain and other Covid problems, it’s completely natural that inflation be even higher than normal.
This is all correct.
Nevertheless, my personal take is that inflation has been running about a point higher than it should. You can get an idea of whether “inflation” is out of control by looking at total nominal spending in the economy. Obviously, that is not a real factor but a nominal figure. And it is also running a little hot right now.
Maybe not much. The data comes in quarterly and it’s noisy. But some. If total spending is growing normally, and inflation is higher than normal, then yes, the higher prices are supply-side problems. But if nominal spending is outpacing the previous trend – and it currently is, at least a bit – then that must, necessarily, have an inflationary effect above and beyond any structural problems in the economy.
It’s not anything to sweat unless it continues.
But I can’t read the political winds at all here. Kirschner relates an anecdote from Fed officials when they were stupidly hawkish. But being stupidly hawkish in the past does not eliminate the possibility of being stupidly dovish in the future. Intellectual fashions change over time. We’ll see about this, very slowly, when more data comes in.
The Fed has some insulation from outside political pressure. But its decision-making apparatus is a government agency and government agencies are not totally blind to which way the political wind is blowing. The Fed was far too docile in 2008. But they doesn’t mean they aren’t erring, slightly, in the opposite direction now.
The first sentence is correct, in the sense that a “perfect thermostat” creates a room temperature that can’t be predicted from the effort of the heater.
The heater turns on, it turns off, it turns on. Yet the room is always the same temperature. There is no correlation (technically, no covariance and undefined correlation) between how hard the heater is working and the constant room temperature. No predictive ability.
Therefore the heater is doing nothing?
No.
Inflation was relatively low and stable because monetary policy made inflation low and stable. Inflation was under control because the Fed decided it wanted inflation under control, and then enacted a monetary policy that would result in that outcome. Successfully.
The monetary authority is the ultimate driver of the nominal aggregates. A long period of extremely stable price growth is not a sign of impotence on the part of the monetary authority. Quite the opposite.
Kirschner is stuck in the old-style models of trying to determine “monetary policy” exclusively from the stock of money, as Milton Friedman would have done. But Friedman lived in a time of relatively stable monetary velocity. MV = PY = nGDP. With modern monetary systems, we have think about both the stock of money and also its circulation: the amount of blood in the body, and also how fast the heart is beating. (A related mistake, from a large class of contemporary models, is trying to use interest rates to determine the stance of monetary policy. This is also almost entirely useless.)
The underlying point is correct: inflation is not an enormous problem right now. Well, maybe politically it is. But not economically.
But this evaluation could easily change. If we start having quarter after quarter after quarter of strongly above average nominal spending growth, such that we end up on a path of spending noticeably steeper than the previous path, then it will be clear that the Fed has been pouring gasoline into the fire.