Showing posts with label Multiplier. Show all posts
Showing posts with label Multiplier. Show all posts

October 31, 2019

Links on the Phillips Curve

Comment on Brad DeLong on ‘Is the Phillips Curve Dead or Is It Just Hibernating?’

Blog-Reference and Blog-Reference

The NAIRU Phillips Curve is ― like the consumption function, IS-LM, or, for that matter, supply-demand-equilibrium ― a rather idiotic construct. So, the question of whether the Phillips Curve is dead is as meaningless as how-many-angels-can-dance-on-a-pinpoint. Economists, though, have not grasped it to this day. The question of whether economists are still intellectually dead has an unambiguous answer: YES.

► Right policy depends on true theory
► The end of Mankiw and his Phillips Curve
► NAIRU, wage-led growth, and Samuelson's Dyscalculia
► Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster
► Essentials of Constructive Heterodoxy: Employment
► The Three Fatal Mistakes of Yesterday Economics: Profit, I=S, Employment

For more about the Phillips Curve see AXECquery.


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AXEC36b The structural-axiomatic 2-sector Employment Law/Phillips Curve

April 5, 2018

Full employment, the Phillips Curve, and the end of gaganomics

Comment on David Glasner on ‘The Phillips Curve and the Lucas Critique’

Blog-Reference and Blog-Reference on Apr 6 and Blog-Reference on Apr 10 adapted to context

The utter failure of economics, of which the Phillips Curve is a well-known example, is due to microfoundations. Economics has to be based on objective macrofoundations. This methodological move is called Paradigm Shift.

Reminder: Economics is NOT about what people do; economics is about what the economy does. Economics is NOT a social science but a systems science.

The macrofoundations approach starts with behavior-free systemic axioms which define the elementary production-consumption economy: (A0) The objectively given and most elementary configuration of the economy consists of the household and the business sector, which in turn consists initially of one giant fully integrated firm. (A1) Yw=WL wage income Yw is equal to wage rate W times working hours. L, (A2) O=RL output O is equal to productivity R times working hours L, (A3) C=PX consumption expenditure C is equal to price P times quantity bought/sold X.

Under the ‘classical’ conditions of market-clearing X=O and budget-balancing C=Yw in each period, the price is the dependent variable and given by P=W/R, i.e., the market-clearing price is always equal to unit wage costs. This is the most elementary form of the macroeconomic Law of Supply and Demand.

As a corollary, this macroeconomic Law kills the commonplace Quantity Theory because the Quantity of Money is NOT among the price determinants.#1 The price is, under the ‘classical’ conditions, determined by the wage rate W, which takes the role of the nominal numéraire, and the productivity R.

If the budget is not balanced, i.e. if the household sector either saves or dissaves, the macroeconomic Law of Supply and Demand takes the form shown on Wikimedia.#2


An expenditure ratio ρE greater than 1 indicates dissaving/credit expansion of the household sector, a ratio ρE less than 1 indicates saving/credit contraction. The ratio ρE provides the link to monetary theory.

The elementary production-consumption economy is the starting point. Subsequently, things become more complex. Under the conditions of market-clearing and independent wage rate and price-setting, employment becomes the dependent variable. The elementary version of the axiomatically correct (objective, systemic, behavior-free, macrofounded) Employment Law is shown on Wikimedia.#3, #4, #5


From this equation follows:
(i) An increase in the expenditure ratio ρE leads to higher employment L.
(ii) Increasing investment expenditures I exert a positive influence on employment.
(iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

The complete Employment Law contains, in addition, profit distribution, the public sector, and foreign trade. These issues have been dealt with elsewhere.

Items (i) and (ii) cover the familiar arguments about aggregate demand. The factor cost ratio ρF, as defined in (iii), embodies the macroeconomic price mechanism. The fact of the matter is that overall employment INCREASES if the average wage rate W INCREASES relative to the average price P and productivity R. Or, the other way round, overall employment DECREASES if the average price P INCREASES relative to the average wage rate W with productivity R unchanged.

Roughly speaking, price inflation is bad for employment, and wage inflation is good. The systemic Phillips Curve defines an inverse relation between price P as the independent variable and employment L as the dependent variable. Since all variables of the macroeconomic Employment Law are measurable, the systemic Phillips Curve is testable. Note that there is no recourse to ridiculous behavioral assumptions like constrained optimization or rational expectations. Microfoundations are gone for good. Lucas's gaganomics is over.

In the Employment Law, wage rate W and price P are the independent variables. So, under the condition of wage rate- and price-setting, the relationship between unemployment and wage rate or wage rate and the price is contingent, i.e., there is NO systemic relationship and no stable correlation.

This, in turn, means that there is NOTHING in the economic system that guarantees that the independent wage rate and price-setting lead somehow to full employment. The market economy is NOT a self-regulating system with an intrinsic tendency to full employment if left alone. Just the opposite, the market system is inherently unstable.

Because the fundamental premise of standard economics is provably false, the independent variables have to be taken as policy parameters. Wage rate- and price-setting have to be managed such that ρF drives employment towards full employment. Monetary and fiscal policies are unfit for the job.

The well-defined systemic Phillips Curve ends all senseless speculation/blather about whether wages rise if the economy approaches full employment or not, but tells policymakers exactly how to set the parameters in order to achieve full employment and zero inflation.#6

Egmont Kakarot-Handtke


#1 Forget Friedman, forget the Quantity Theory
#2 Wikimedia AXEC101 Law of Supply and Demand
#3 Wikimedia AXEC62 Employment Law
#4 Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster
#5 NAIRU, wage-led growth, and Samuelson's Dyscalculia
#6 For details of the big picture, see cross-references Employment/Phillips Curve

Related 'Economists never understood how the price mechanism works' and 'Mass unemployment: The joint failure of orthodox and heterodox economics' and 'NAIRU and the scientific incompetence of Orthodoxy and Heterodoxy' and 'Full employment through the price mechanism'.


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Twitter/X Sep 10, 2025  Testing the Employment Law (and refuting the Phillips Curve trade-off between inflation and employment) is especially difficult because employment numbers are unreliable, particularly in the run-up to an election.




Twitter/X Sep 10, 2025

January 4, 2018

Economists, stupid or corrupt or both?

Comment on David Glasner on ‘Does Economic Theory Entail or Support Free-Market Ideology?’

Blog-Reference and Blog-Reference on Jan 18 adapted to context

Economics of the last 200+ years is the most embarrassing failure in the history of modern science.

The basic question of economics is whether “the existing economic system is, in any significant sense, self-adjusting.” (Keynes) Walrasian economics failed to prove this. The lethal methodological blunder of standard economics has been to put equilibrium (and other nonentities) into the premises. This blunder is known since antiquity as petitio principii.#1

Keynes realized that the classical microfoundations approach had led into a cul-de-sac and therefore switched to macrofoundations. This was ― in principle ― the right first step towards a Paradigm Shift, except for the fact that Keynes messed up his macrofoundations. This is why Keynesianism, too, is a failure.#2

Because the four main approaches ― Walrasianism, Keynesianism, Marxianism, Austrianism ― are mutually contradictory, axiomatically false, and materially/formally inconsistent, economic policy guidance never had sound scientific foundations from Adam Smith/Karl Marx onward. This applies, of course, to the so-called free-market ideology.

There is political economics and theoretical economics. The main differences are: (i) The goal of political economics is to successfully push an agenda, the goal of theoretical economics is to successfully explain how the actual economy works. (ii) In political economics anything goes; in theoretical economics, the scientific standards of material and formal consistency are observed.

Economics claims to be a science but is NOT. Theoretical economics (= science) had been hijacked from the very beginning by political economists (= agenda pushers). Political economics is scientifically worthless. It is pretty obvious that Keynes, Hayek,#3 Friedman,#4 etcetera were not scientists but clowns in the political Circus Maximus.

True economic theory tells us how the economic system works. The economist needs the true theory, i.e. the humanly best mental representation of reality: “In order to tell the politicians and practitioners something about causes and best means, the economist needs the true theory or else he has not much more to offer than educated common sense or his personal opinion.” (Stigum)

Keynes, Hayek, Friedman, and their heirs/parrots up to DSGE and MMT never rose above the proto-scientific level of common-sense rhetoric, opinion, and political agenda pushing. The claim as expressed in the title “Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel” is a joint Walrasian/Keynesian/Marxian/Austrian deception of the public.

Egmont Kakarot-Handtke


#1 Petitio principii — economists’ biggest methodological mistake
#2 What Keynes really meant but could not really prove
#3 Austrian idiocy ― the case of Hayek
#4 Milton Friedman, fake scientist

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Wikimedia AXEC121i




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JFTR on Jan 18

Skidelsky concludes: “Macroeconomics still needs to come up with a big new idea.

■ Public Deficit = Private Profit ― is Keynesianism/MMT a social hoax?

Paradigm Shift is the big new idea

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REPLY to Ralph Musgrave on Jan 21

You say “Even if every dollar of stimulus did end up in the pockets of the rich, that would not stop stimulus working. To illustrate, assume 10% of all government spending ends up as profit which is hoarded by the rich. That means 90% initially goes to the “non-rich”. In the next ‘round’ so to speak, 10% is again hoarded by the rich.”

This is a nice try playing down the fact that Public Deficit = Private Profit and that, by consequence, MMT is essentially a social bluff package for the agenda of the one-percenters.

Your error/mistake/blunder consists of applying the old Keynesian multiplier which, unfortunately, is false for 80+ years.#1, #2, #3

To cut the meticulous formal derivation short, the most elementary version of the axiomatically correct Employment Law for the economy as a whole is given on Wikimedia AXEC62:


From this equation follows:
(i) An increase in the expenditure ratio ρE leads to higher employment L (the Greek letter ρ stands for ratio). An expenditure ratio ρE greater than 1 indicates credit expansion, a ratio ρE less than 1 indicates credit contraction of the household sector.
(ii) Increasing investment expenditures I exert a positive influence on employment, a slowdown in growth does the opposite.
(iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

The complete Employment Law is a bit longer and contains in addition profit distribution, public deficit spending, and import/export.

The correct employment multiplier consists of TWO elements: the expenditure ratio and the factor cost ratio. Now, the following may happen simultaneously: the expenditure ratio goes up and the factor cost ratio goes down such that the combined multiplier effect is zero. That means, deficit spending has NO effect on employment but only on profit. All that is necessary for annihilating the employment effect of deficit spending is a one-off price hike.

So, deficit spending ALWAYS benefits the one-percenters because Public Deficit = Private Profit is absolutely certain while the employment effect is very uncertain and may well be zero.


#3 For a comprehensive overview see cross-references Employment

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REPLY to Tom Hickey on Jan 21

You say “I can see how Egmont might be right about government deficits ended up as money in the elites pockets. MMT says essentially the same thing. Government deficits accommodate non-government saving, most of which is done by those that are well-off if not rich.”

The smarter part of humanity, in turn, can see now that you, Kaivey, Musgrave, Kelton, Mosler, Mitchell, Tcherneva, Wray, Fullwiler, Forstater, Kaboub, Pettifor, Keen, Tymoigne, Willingham, Grumbine, and all the blogging and tweeting MMT rest have NO idea how the economy works.

The axiomatically correct balances equation reads Qm≡Yd+I−Sm+(G−T)+(X−M); Legend: Qm total monetary profit, Yd distributed profit, I investment expenditures, Sm monetary saving, G government expenditures, T taxes, X exports, M imports. This translates into Public Deficit = Private Profit given the balances of the other sectors.#1

The government deficit does NOT “accommodate” household sector saving Sm because the household sector as a whole may also run a deficit = dissaving = Sm negative. In this case, it holds macroeconomic profit = public sector deficit PLUS household sector deficit. And exactly this was the case in the USA in the last decades.

The MMT headline government deficit = private sector surplus is proto-scientific garbage or worse.#2



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REPLY to Tom Hickey on Jan 22

You say “According to MMT, the way to moderate capitalism is through increasing the welfare state, increasing labor bargaining power, and adding a JG. This would preemptively distribute wages so that rising incomes could sustainable consumption desire at full employment.”

In the political realm, everybody can climb on a soapbox and tell the audience how the world can be made a better place and how the economy can be fixed ― except an economist.

The mission of the economist ― understood as a scientist ― is to figure out how the economy works and NOT to push a political agenda. The monstrous failure of both orthodox and heterodox economists is that they have NOT developed anything resembling the true theory in the last 200 years but crawl in endless loops in the proto-scientific swamp. MMT is just a case in point.

Because they do not have the true (= materially and formally consistent) theory economists’ contribution to policy is worthless or even counterproductive. It is just like the storytellers of old who never contributed anything to aviation but only entertained their audience with tales about flying carpets.

In the political realm, MMT is the deficit-does-not-matter storyteller, but in the scientific realm MMT does not even get the elementary mathematics of macroeconomic accounting right.#1

MMT’s claim to rectify capitalism is laughable.  MMT is a flying carpet story just like Walrasianism, Keynesianism, Marxianism, and Austrianism.#2


August 15, 2017

Advancing to the correct multiplier

Comment on Peter Cooper on ‘Short & Simple 16 ― The Expenditure Multiplier and Income Determination’

Blog-Reference

Peter Cooper states: “We have seen that total spending equals total income. It has been argued that it is spending that creates (or determines) income. This can be inferred from the observation that some spending can occur independently of income. Spending that occurs independently of income is called autonomous spending. … Examples of autonomous spending are: government spending; autonomous private consumption; private investment; exports.”

We have proven that the statement ‘total spending equals total income’ is false.#1 By consequence, the whole formal apparatus of MMT is defective. This, of course, affects also the multiplier.

The elementary version of the correct (objective, systemic, behavior-free, macrofounded) Employment Law is shown on Wikimedia AXEC62: #2


From this equation follows:
(i) An increase of the expenditure ratio ρE leads to higher employment L (the Greek letter ρ stands for ratio). An expenditure ratio ρE greater than 1 indicates credit expansion, a ratio ρE less than 1 indicates credit contraction.
(ii) Increasing investment expenditures I exert a positive influence on employment.
(iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

The complete Employment Law contains in addition profit distribution, the public sector, and foreign trade.

Item (i) and (ii) cover the familiar arguments about aggregate demand. The factor cost ratio ρF as defined in (iii) embodies the price mechanism.

The correct employment and income multiplier consists of TWO components, the expenditure ratio ρE and the factor cost ratio ρF.#3 The latter component is missing in the familiar approaches which leads to wrong policy prescriptions.

Egmont Kakarot-Handtke


#1 For the full-spectrum refutation of MMT see cross-references MMT
#2 Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster
#3 For details of the big picture see cross-references Employment

Related 'It’s the price mechanism, stupid!' and 'Rethinking the multiplier' and 'Note on the employment multiplier' and 'The labor market and the consistent failure of 101-economics'.

June 8, 2017

Just revealed: IS-LM is dead for 80+ years

Comment on Bradford DeLong on ‘On the negative information revealed by Marvin Goodfriend’s “I don’t teach IS-LM”’

Blog-Reference and Blog-Reference

Brad DeLong summarizes: “But I believe that whenever anybody says “I don’t teach IS-LM” they are one of:
1. Making completely implausible and wrong claims about how the economy works.
2. Being lazy and/or stupid.
3. Declaring a tribal affiliation to xxx that I think has shed a lot more heat than light on real issues.”

The fact of the matter is that IS-LM is axiomatically false. Keynes formulated the formal core of the General Theory as follows: “Income = value of output = consumption + investment. Saving = income − consumption. Therefore saving = investment.” (p. 63) This elementary syllogism is conceptually defective because Keynes never came to grips with profit: “His Collected Writings show that he wrestled to solve the Profit Puzzle up till the semi-final versions of his GT but in the end he gave up and discarded the draft chapter dealing with it.” (Tómasson et al.)

Keynes had no idea of what profit is, neither had After-Keynesians. As a result, all I=S models, all IS-LM models, the Keynesian multiplier, Post Keynesianism, and New Keynesianism are false.#1

So, whenever anybody says “I apply a variant of IS-LM” they are one of these folks
1. Taking provably false macroeconomic axioms as formal foundations.
2. Not knowing what profit, i.e. the foundational economic magnitude, is.
3. Being moronic and/or imbecile and/or committing scientific suicide.#2

Egmont Kakarot-Handtke


#1 The Three Fatal Mistakes of Yesterday Economics: Profit, I=S, Employment
and Mr. Keynes, Prof. Krugman, IS-LM, and the End of Economics as We Know It
#2 For details of the big picture see cross-references Refutation of I=S


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Wikimedia AXEC172

May 31, 2017

Toward a non-Neanderthal employment policy

Comment on Brad DeLong on ‘Why Is the FOMC So Certain the U.S. Is "Essentially at Full Employment"?’

Blog-Reference and Blog-Reference

The question is not so much whether to replace the unemployment rate with the employment-to-population ratio as a metric for the labor market condition but to clarify the relationship between employment, wage rate, price, and productivity. These issues have been dealt with with the help of the analytical tool of the (bastard) Phillips Curve.

The fact of the matter is that the Phillips Curve labor market theory is Neanderthal economics.#1 The elementary version of the correct objective, systemic, behavior-free, macrofounded Employment Law is shown on Wikimedia AXEC62.


From this equation follows:
(i) An increase in the expenditure ratio ρE leads to higher employment L (the Greek letter ρ stands for ratio). An expenditure ratio ρE greater than 1 indicates credit expansion, a ratio ρE less than 1 indicates credit contraction.
(ii) Increasing investment expenditures I exert a positive influence on employment.
(iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

From this follows that if ρF is kept constant employment is kept constant. In other words, if the wage rate rises at the same rate as price times productivity employment is kept constant. If the FED wants to increase employment and price it has to set the PRIORITIES right and see to it that the average wage rate increases.

Unfortunately, the price mechanism DESTABILIZES the economy. The sequence is as follows: price up → ρF down → employment down → wage rate down → ρF down → employment down → and so on. In other words, the market economy is inherently unstable. The core claim of equilibrium economics is provably false. Standard employment theory is false for 200+ years but still in use in the FED Neanderthal.

Egmont Kakarot-Handtke


#1 Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster

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REPLY to pgl on May 31

You say: “Simply put ― we are not yet at full employment.” Agree. But then, it is economists who bear the intellectual responsibility for the social devastation of unemployment because economic policy has no sound scientific foundation. Economists are failed or fake or Neanderthal scientists and this is ― simply put ― the ultimate reason why “we are not yet at full employment.”

Your comment does not much to improve the situation.

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REPLY to pgl on May 31

“We economists have all learned, and many of us teach, that the remedy for excess supply in any market is a reduction in price. If this is prevented by combinations in restraint of trade or by government regulations, then those impediments to competition should be removed. Applied to economy-wide unemployment, this doctrine places the blame on trade unions and governments, not on any failure of competitive markets.” (Tobin, 1997)

This is a generalization of partial analysis and this primitive methodological mistake is known since antiquity as Fallacy of Composition.

The correct systemic Employment Law (above) says exactly the opposite. This means that the remedy that “economists have all learned” WORSENS the situation. This brings us to Napoleon: “Late in life, moreover, he claimed that he had always believed that if an empire were made of granite the ideas of economists if listened to, would suffice to reduce it to dust.” (Viner)

Economics is a failed science and Brad DeLong and you are part of the incompetent crowd that reduces the economy to dust.

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COMMENT on Edward Lambert on Jun 1

Keynesianism is axiomatically false for 80+ years.#1 Effective demand is only part of the Employment Law.#2 Because of this Keynes’ employment theory is provably false.#3 There is NO use to quote the GT, better to get out of the Neanderthal because with your ignorance you are part of the problem.#4


#1 How Keynes got macro wrong and Allais got it right
#2 Keynes saw the problems but did not solve them
#3 Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster
#4 Mass unemployment: The joint failure of orthodox and heterodox economics


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COMMENT on Robert Waldmann on Jun 4

It is pretty obvious that the participation rate varies with the age structure of a population and is lower in an aging population. Now, one can argue that it is ‘too low’ given the underlying age structure and given the observation that people retire/are retired earlier than 30 years ago.

Let us be satisfied for the moment with the diagnosis ‘too low’ in order not to be distracted by a pointless discussion about measurement problems. So the practical question is how to increase overall employment in the economy. This is a very old and fundamental question of economics and economists have answered it thus: “We economists have all learned, and many of us teach, that the remedy for excess supply in any market is a reduction in price. If this is prevented by combinations in restraint of trade or by government regulations, then those impediments to competition should be removed. Applied to economy-wide unemployment, this doctrine places the blame on trade unions and governments, not on any failure of competitive markets.” (Tobin, 1997)

This answer is dead wrong because it is a generalization of partial analysis and this primitive methodological mistake is known since antiquity as Fallacy of Composition.

The other answers to the employment problem are monetary and fiscal policy. Let us put these options aside as not feasible for the moment and focus on the price mechanism. To recall, one of the core tenets of standard economics has always been that the uninhibited working of the price mechanism establishes full employment of ALL factors. Of course, it was always understood that things do not work perfectly in real life.

Now, it has been proved that the price mechanism does NOT work as supposed, that is, a reduction of the average wage rate does NOT increase employment for the economy as a whole. The correct systemic Employment Law#1 says exactly the opposite. This means that the remedy that “economists have all learned” WORSENS the situation.

From this follows for economic policy that the third tool in addition to monetary and fiscal policy is needed. What has to be achieved is a rectification of the price mechanism. This has nothing to do with stickiness or frictions or other imperfections. Fact is: the perfectly working price mechanism INCREASES unemployment in the economy because there is a positive feedback loop built right into the core of the market economy. Macro-economically it is NOT wage rate down ― employment up, but it is wage rate down ― employment down.

Whoever is tasked with the challenge of increasing employment/participation has to increase the wage rate at a higher rate than price times productivity. This is a SYSTEMIC necessity and has NOTHING to do with social policy. The FED’s attempt to push inflation via monetary policy is counterproductive and proves that the FED and the economists who supply it with policy guidance are still deep in the woods of the economics Neanderthal. What “economists have all learned, and many of us teach” is logically and empirically inconsistent proto-scientific rubbish.


#1 Wikimedia AXEC62

December 30, 2016

Let Keynes rest in peace

Comment on Koichi Hamada on ‘Keynes Reborn’

Blog-Reference and Blog-Reference

Walrasian, Keynesian, Marxian, and Austrian economists are groping in the dark with regard to the two most important features of the market economy, that is, the profit mechanism and the price mechanism. To get out of failed economic theory requires nothing less than a full-blown paradigm shift.

In the following, a sketch of the correct employment theory is given.#1 The most elementary version of the objective systemic Employment Law is shown on Wikimedia AXEC62:
From this equation follows:
(i) An increase in the expenditure ratio ρE leads to higher employment (the Greek letter ρ stands for ratio). An expenditure ratio ρE greater than 1 indicates credit expansion, a ratio ρE less than 1 indicates credit contraction.
(ii) Increasing investment expenditures I exert a positive influence on employment, a slowdown of growth does the opposite.
(iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

The complete Employment Law gets a bit longer and contains in addition profit distribution, public deficit spending, and foreign trade.

Items (i) and (ii) cover Keynes’ well-known arguments about aggregate demand. The factor cost ratio ρF as defined in (iii) embodies the price mechanism which, however, works other than standard economics hallucinates. As a matter of fact, overall employment INCREASES if the average wage rate W INCREASES relative to average price P and productivity R. This implication is readily testable against standard economics.

The systemic Employment Law points the way to an effective employment policy. Right policy depends on true theory. Both neoclassical and Keynesian labor market theories are provable false.*

Egmont Kakarot-Handtke

November 30, 2016

Rethinking the multiplier

Comment on Mark Thoma on ‘Infrastructure, jobs and wages: It’s not so simple’

Blog-Reference

Standard economics is known to be axiomatically false. This implies that the familiar theory of the multiplier is also false. This, in turn, means that economic policy proposals have no sound scientific foundations.

This is rather bad because “In order to tell the politicians and practitioners something about causes and best means, the economist needs the true theory or else he has not much more to offer than educated common sense or his personal opinion.” (Stigum)

Economists have no true theory but only different opinions. What has been fateful already in the Great Depression is that economists lack the true employment theory for 200+ years. So unemployment is in the last instance the result of economists’ scientific incompetence.

To make a comprehensive analysis short#1 the basic version of the objective structural Employment Law is shown on Wikimedia AXEC62:


From this equation follows the correct multiplier. Keynes’ arguments about the role of aggregate demand have been commonsensically right but formally defective. More precisely, the Keynesian standard multiplier is provably false for 80+ years.

Egmont Kakarot-Handtke


#1 The very serious blunders of very serious people

July 14, 2016

There is no thrift paradox, or, How economists fell over their own feet

Comment on Richard Koo on ‘Paradox of thrift was the norm before the industrial revolution’

Blog-Reference

Richard Koo’s paper about macroeconomic development#1 is descriptively accurate and historically rich in detail. It is far above the low level of familiar orthodox and heterodox economics. What is lacking, though, is a sound theoretical foundation. This cannot be otherwise because economics as a whole lacks sound foundations. More precisely, both current microfoundations and macrofoundations are false.

Koo puts it thus: “Macroeconomics is still a very young science compared to such disciplines as physics and chemistry. It started when Keynes began talking about the concept of aggregate demand in the 1930s, only 85 years ago. As a very young science, it has achieved only limited coverage of the broad range of economic phenomena and remains prone to fads and influences.”

Reality is actually far worse. Keynes based macroeconomics on logically and conceptually defective foundations and neither Post Keynesians nor New Keynesians nor Anti-Keynesians have realized Keynes’ foundational blunder in 80 years (2014).

Keynes defined the formal core of the General Theory as follows: “Income = value of output = consumption + investment. Saving = income − consumption. Therefore saving = investment.” (1973, p. 63)

This two-liner is defective because Keynes never came to grips with profit: “His Collected Writings show that he wrestled to solve the Profit Puzzle up till the semi-final versions of his GT but in the end he gave up and discarded the draft chapter dealing with it.” (Tómasson et al., 2010, p. 12)

Let this sink in, Keynes had NO idea of the fundamental concepts of economics, viz. profit and income. Because profit is ill-defined the whole theoretical superstructure of macroeconomics is false, in particular, ALL I=S/IS-LM models (2011; 2013).

Koo starts his analysis as follows: “One person’s expenditure is another person’s income. It is this unalterable linkage between the expenditures and incomes of millions of thinking households and businesses that makes the study of the economy both interesting and unique.”

Note that Koo’s first sentence is identical to Keynes’. For every economist, this proposition is pure common sense ― a mere accounting identity. As a matter of fact, it is provably false and this explodes the whole of macroeconomics. Economists do not grasp the elementary mathematics of accounting (2012) and this goes a long way to explain why economics has never risen above the proto-scientific level.

To get out of failed economic theory requires nothing less than a full-blown paradigm shift from accustomed microfoundations and Keynes’ flawed macrofoundations to entirely new macrofoundations.#2

Ultimately, the paradox of thrift has its roots in the confusion about the saving of the household sector, retained profit (falsely termed ‘saving’ of the business sector), profit, and distributed profit. The axiomatically correct macroeconomic Profit Law reads Qm= Yd+I−Sm (2014, p. 8, eq. (18)). Legend Qm monetary profit, Yd distributed profit, Sm monetary saving, I investment expenditure. The interaction of I and Sm underlies Koo’s description of economic expansion and balance sheet recession. What is entirely missing in Koo’s description is the interaction of Qm and Yd.

The profit equation gets a bit longer when import/export and government are included.

Roughly speaking, there are TWO self-reinforcing feedback loops:
(i) Household sector saving Sm up ― profit Qm down ― investment I down because of reduced self-financing out of retained profit ― profit Qm down ― and so on (with wages, prices, and employment down)
(ii) Household sector saving Sm down or dissaving up ― profit Qm up ― investment I up because of increased self-financing out of retained profit ― profit Qm up ― and so on (with wages, prices, and employment up)

The confusion is, again in rough terms, this: (a) saving of the ‘workers’ is bad because it drags down the economy, (b) ‘saving’ out of profit (= retained profit) is good because it is normally put to use for business expansion = investment. In this case, bankers/financiers/ lenders are not needed at all or less so. There are fewer restrictions to expansion from the monetary side.

What the Classicals had in mind when they lauded ‘saving’ and ‘frugality’ was in fact retained profit and reinvestment in contradistinction to profit distribution and spending on consumption. What Keynes had in mind was the saving of the household sector. The cross-talk about saving and investment goes on until this day: “The truth is, most persons, not excepting professional economists, are satisfied with very hazy notions.” (Fisher, quoted in Mirowski, 1995, p. 86)

What economic history will someday find out is that the kick-off event of the Industrial Revolution has been a happy combination of DISSAVING of the household sector and credit creation of the emerging banking sector on an ever-increasing scale and self-financing out of profits which freed businesses from lenders and the economy as a whole from the clampdown of a fixed quantity of money. Credit creation that translates directly into an increase in the wage bill (with wage increase = productivity increase) helps to enable perfectly inflation-free growth. Money out of nothing is a GOOD thing IF DONE PROPERLY.

Bottom line: saving Sm and investment I develop INDEPENDENTLY. There is NO such thing as an interest mechanism that equalizes I and S. It is neither true that saving ‘causes’ investment as the Classicals claimed nor that investment determines saving via the multiplier as Keynes claimed. The perpetual difference between investment I and saving Sm is the main determinant of profit Qm. BOTH, the Classicals and Keynes got the profit theory wrong. Nothing worse can happen to an economist.#3

Koo’s approach is a clear improvement with regard to the credit mechanism but shares the fundamental conceptual error which is embodied in this simple proposition: Income = value of output.

Egmont Kakarot-Handtke


References
Kakarot-Handtke, E. (2011). Squaring the Investment Cycle. SSRN Working Paper Series, 1911796: 1–25. URL
Kakarot-Handtke, E. (2012). The Common Error of Common Sense: An Essential Rectification of the Accounting Approach. SSRN Working Paper Series, 2124415: 1–23. URL
Kakarot-Handtke, E. (2013). Settling the Theory of Saving. SSRN Working Paper Series, 2220651: 1–23. URL
Kakarot-Handtke, E. (2014). The Three Fatal Mistakes of Yesterday Economics: Profit, I=S, Employment. SSRN Working Paper Series, 2489792: 1–13. URL
Keynes, J. M. (1973). The General Theory of Employment Interest and Money. London, Basingstoke: Macmillan.
Mirowski, P. (1995). More Heat than Light. Cambridge: Cambridge University Press.
Tómasson, G., and Bezemer, D. J. (2010). What is the Source of Profit and Interest? A Classical Conundrum Reconsidered. MPRA Paper, 20557: 1–34. URL

#1 real-world economics review issue #75
#2 For more details see The other half plus the hitherto missing true foundations of macroeconomics
#3 See also I=S: Mark of the Incompetent.

For details of the big picture see cross-references Refutation of I=S

June 6, 2016

Getting out of IS-LM = Getting out of despair

Comment on Nick Rowe on ‘On Olivier Blanchard on IS-LM and Teaching Intermediate Macro. And my despair.’ and on Oliver Blanchard on ‘How to Teach Intermediate Macroeconomics after the Crisis?’

Blog-Reference and Blog-Reference on Jun 7 and Blog-Reference on Jun 13 adapted to context and Blog-Reference adapted to context

Blanchard concludes his article:#1 “Macroeconomics is a tremendously exciting subject. Most of what we taught before the crisis remains highly relevant. But it needs some dusting and updating. My hope is that a model along the lines above can contribute to it.”

Not so. IS-LM has always been methodologically unacceptable and its proper place is the Flat-Earth Cemetery. The attempts of Blanchard and Rowe to save it with “some dusting and updating” are purely ceremonial.

1. How Keynes got it wrong

Keynes formulated the formal core of the General Theory as follows: “Income = value of output = consumption + investment. Saving = income − consumption. Therefore saving = investment.” (1973, p. 63)

This elementary syllogism is conceptually defective because Keynes never came to grips with profit (Tómasson et al., 2010, p. 12). As a result, all I=S models and the Keynesian multiplier are false (2011).

2. Rectification

The Keynesian premises have to be replaced by the correct macrofoundations. This is achieved as follows
A0. The objectively given and most elementary configuration of the economy consists of the household and the business sector which in turn consists initially of one giant fully integrated firm.
(A1) Yw=WL wage income Yw is equal to wage rate W times working hours. L,
(A2) O=RL output O is equal to productivity R times working hours L,
(A3) C=PX consumption expenditure C is equal to price P times quantity bought/sold X.

For the graphical representation of this ABSOLUTE formal MINIMUM see the 4-Quadrant chart on Wikimedia AXEC31.


(A1) to (A3) asserts: At any given level of employment L, the wage income Yw that is generated in the consolidated business sector follows by multiplication with the wage rate W. On the real side, output O follows by multiplication with the productivity R. Finally, the price P follows as the dependent variable under the conditions of (i) budget balancing, i.e. C=Yw, and (ii), market clearing, i.e. X=O.

Under the conditions (i)|(ii) the price is derived in each period as P=W/R, i.e. the market-clearing price is in the most elementary case equal to unit wage costs which vary over successive periods.

In the next period, the households save, i.e. condition (i) is now lifted. The result is shown on Wikimedia AXEC33.


Consumption expenditures C fall below Yw and with it the market-clearing price P. The product market is cleared due to (ii) and there is no such thing as inventory investment, i.e. I=0. Monetary saving of the household sector is given by SmYw−C.

The business sector makes a monetary loss which is equal to the household sector’s saving, i.e. Qm−Sm. Therefore, loss is the exact counterpart of saving; by consequence, profit is the exact counterpart of dissaving. This is the most elementary form of the macroeconomic Profit Law. It follows directly from the profit definition QmC−Yw and the definition of household sector saving.

The sector balances always add up to zero, i.e. Qm+Sm=0, and this is the correct accounting identity. Saving and investment are NEVER equal, neither ex-ante nor ex-post. Therefore: NO IS-curve ever existed. The elaborate interpretation of the IS-LM-nonentity over more than 80 years is on the same level as haruspicy, i.e. old Roman poultry entrails reading.

3. Generalization

The Profit Law for the investment economy reads QmYd+I−Sm. Legend: Qm monetary profit, Yd distributed profit, Sm monetary saving, I investment expenditures.

The DIFFERENCE between investment and saving I−Sm plus distributed profit Yd determines monetary profit Qm, which is measurable with two decimal places.

4. The Employment Law/Phillips Curve

From the differentiated axiom set (A1) to (A3) follows the structural Employment Law which is shown on Wikimedia AXEC62

From this equation, which is complementary to the structural Phillips Curve (2012), follows: (i) An increase of the expenditure ratio ρE leads to higher employment L (the Greek letter ρ stands for ratio). (ii) Increasing investment expenditures I exert a positive influence on employment, a slowdown in growth does the opposite. (iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

Item (i) and (ii) cover Keynes’ arguments about aggregate demand. What is missing in the Keynesian employment multiplier, though, is the ratio ρF as defined in (iii). This variable embodies the price mechanism. It works such that overall employment INCREASES if the average wage rate W INCREASES relative to average price P and productivity R and vice versa.

The complete Employment Law is a bit longer and contains in addition profit distribution, public deficit spending, and import/export. Investment and the interest rate for business loans Jb are connected via the elasticity Eb, and the household sector’s expenditure ratio and the interest rate for loans/deposits are connected via the elasticity Eh. Hence, the structural Employment Law fully replaces what Blanchard advertises as his updated IS-LM-Phillips-Curve model.

5. Conclusions

(i) All I=S/IS-LM models from Keynes/Hicks to Blanchard/Krugman/Rowe are provably false (2014).
(ii) The investment multiplier is formally defective since Keynes.
(iii) The classical and Keynesian profit theories are false.
(iv) The representative economist has NOT gotten (i) to (iii) to this day because of incurable scientific incompetence.

Egmont Kakarot-Handtke


#1 How to Teach Intermediate Macroeconomics after the Crisis?

References
Kakarot-Handtke, E. (2011). Why Post Keynesianism is Not Yet a Science. SSRN Working Paper Series, 1966438: 1–20. URL
Kakarot-Handtke, E. (2012). Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster. SSRN Working Paper Series, 2130421: 1–19. URL
Kakarot-Handtke, E. (2014). Mr. Keynes, Prof. Krugman, IS-LM, and the End of Economics as We Know It. SSRN Working Paper Series, 2392856: 1–19. URL
Keynes, J. M. (1973). The General Theory of Employment Interest and Money.  London, Basingstoke: Macmillan.
Tómasson, G., and Bezemer, D. J. (2010). What is the Source of Profit and Interest? A Classical Conundrum Reconsidered. MPRA Paper, 20557: 1–34. URL

Related 'Keynes’s Missing Axioms' and 'I is never equal S and even Nick Rowe will eventually grasp it' and 'Causa finita: the end of I=S/IS-LM' and 'The IS-LM macro imbeciles' and 'Just revealed: IS-LM is dead for 80+ years' and 'I=S: Mark of the Incompetent' and 'Are economics professors really that incompetent? Yes!' For details of the big picture see cross-references Refutation of I=S.

***
REPLY to Nick Rowe

You asked yourself: “OK Nick, but if you don’t like teaching IS-LM, what would you teach instead? Which is a perfectly reasonable question. Which is why I despair. Because what could I teach instead?”

The answer is in my post ‘Getting out of IS-LM = Getting out of despair’. With the structural axiom set (A1) to (A3) you get the CORRECT FORMAL MINIMUM. These macrofoundations fully replace both the obsolete Walrasian microfoundations and your apples-bananas-mangoes equilibrium model.

It seems that you cannot see the solution for your self-inflicted despair when it is right before your eyes. While it is perfectly understandable that you deleted my post in your analytical agony it would have been perhaps helpful for others if you had at least left a link standing, e.g. this.

After all, other desperate IS-LMers should also have a fair chance to make up their minds. It is of utmost importance to terminate IS-LM teaching once and for all.

Keynes, the methodologist

Comment on Asad Zaman on ‘The Keynesian Revolution and the Monetarist Counter-Revolution’

Blog-Reference

Keynes’ lasting scientific contribution relates to methodology. He spoke it out loud, so that every fellow economist could hear it: Throw over the classical axioms and put economics on new foundations: “For if orthodox economics is at fault, the error is to be found not in the superstructure, which has been erected with great care for logical consistency, but in a lack of clearness and of generality in the premises.” (1973, p. xxi)

With the revolutionary shift in mathematics and physics from Euclidean to non-Euclidean axiomatics (Hilbert, Einstein) right before his eyes, Keynes called his fellow economists to arms. “The classical theorists resemble Euclidean geometers in a non-Euclidean world who, discovering that in experience straight lines apparently parallel often meet, rebuke the lines for not keeping straight — as the only remedy for the unfortunate collisions which are occurring. Yet, in truth, there is no remedy except to throw over the axiom of parallels and to work out a non-Euclidean geometry. Something similar is required to-day in economics.” (1973, p. 16)

As Asad Zaman puts it: “Keynes followed scientific methodology to create a new theory which rejected all three axioms of CET [Classical Economic Theory], so that Keynesian theory would match the experienced realities of the Great Depression. This is the distinguishing feature of science, that theories are devised and changed in light of experience.” (See intro)

To change a theory means to change the axiomatic foundations. This is what a paradigm shift is all about. Consequently, Keynes formulated the foundational syllogism of the General Theory as follows: “Income = value of output = consumption + investment. Saving = income − consumption. Therefore saving = investment.” (1973, p. 63)

This elementary two-liner, though, is conceptually and logically defective because Keynes did not come to grips with profit and therefore “discarded the draft chapter dealing with it.” (Tómasson et al., 2010, p. 12). As a result, the whole Post-Keynesian theoretical superstructure is false (2011; 2014).

Because Keynes did not get the macrofoundations right the Keynesian Revolution ultimately failed. Just like the Walrasians, Keynes had no idea of the fundamental concepts of economics, viz. profit and income.

In the neoclassical synthesis of Samuelson, Keynes’ new ‘non-Euclidean axioms’ and the old ‘Euclidean axioms’ of marginalism were cobbled together. Textbooks consisted of two well-balanced halves: micro and macro. Needless to emphasize that both halves did not fit together. Economic textbooks are blatantly inconsistent since 1948.

Gradually, the majority of economists fell entirely back to the pre-Keynesian formal foundations of marginalism. As Krugman put it “most of what I and many others do is sorta-kinda neoclassical because it takes the maximization-and-equilibrium world as a starting point.”

It is pretty obvious to anyone with a modicum of scientific instinct that the axiomatic starting point of the neoclassical paradigm is methodologically unacceptable (2013). By sticking to the obsolete microfoundations Orthodoxy violates scientific standards that hold since the ancient Greeks introduced the axiomatic-deductive methodology.

As Morgenstern reminded economists already back in 1941: “In economics we should strive to proceed, wherever we can, exactly according to the standards of the other, more advanced, sciences, where it is not possible, once an issue has been decided, to continue to write about it as if nothing had happened.” (1941, pp. 369-370)

Orthodox economists will burn in scientific hell because they stick to microfoundations that are false since Jevons/Walras/Menger. Post-Keynesian economists will burn in scientific hell because they stick to macrofoundations that are false since Keynes.

The axiomatic foundations of economics are provably false for more than 140 years. Because of this, economic policy advice of BOTH Walrasians AND Keynesians has no sound scientific foundation (2015).

Egmont Kakarot-Handtke


References
Kakarot-Handtke, E. (2011). Why Post Keynesianism is Not Yet a Science. SSRN Working Paper Series, 1966438: 1–20. URL
Kakarot-Handtke, E. (2013). Confused Confusers: How to Stop Thinking Like an Economist and Start Thinking Like a Scientist. SSRN Working Paper Series, 2207598: 1–16. URL
Kakarot-Handtke, E. (2014). The Three Fatal Mistakes of Yesterday Economics: Profit, I=S, Employment. SSRN Working Paper Series, 2489792: 1–13. URL
Kakarot-Handtke, E. (2015). Major Defects of the Market Economy. SSRN Working Paper Series, 2624350: 1–40. URL
Keynes, J. M. (1973). The General Theory of Employment Interest and Money. Basingstoke: Macmillan.
Morgenstern, O. (1941). Professor Hicks on Value and Capital. Journal of Political Economy, 49(3): 361–393. URL
Tómasson, G., and Bezemer, D. J. (2010). What is the Source of Profit and Interest? A Classical Conundrum Reconsidered. MPRA Paper, 20557: 1–34. URL

May 29, 2016

The tiny little problem with economics

Comment on Lars Syll on ‘The tiny little problem with Chicago economics’

Blog-Reference and Blog-Reference on Jun 2

The problem with economics is that BOTH orthodox and heterodox economists are scientifically incompetent. The proof is in the fact that they do not even get macroeconomic accounting right which is a rather elementary form of mathematics.

1. Locked-in for 80+ years
Lars Syll summarizes: “What Cochrane is reiterating here is nothing but Say’s law, basically saying that savings are equal to investments, and that if the state increases investments, then private investments have to come down (‘crowding out’). As an accounting identity there is, of course, nothing to say about the law, but as such it is also totally uninteresting from an economic point of view. As some of my Swedish forerunners — Gunnar Myrdal and Erik Lindahl — stressed more than 80 years ago, it’s really a question of ex-ante and ex-post adjustments.”

2. The logical blunder
(a) “Savings are equal to investments is an accounting identity,
(b) it’s really a question of ex-ante and ex-post adjustments.”
Both statements are provably false (2011a; 2011b; 2012).

3. How Keynes got I=S wrong
Keynes formulated the formal core of the General Theory as follows: “Income = value of output = consumption + investment. Saving = income − consumption. Therefore saving = investment.” (1973, p. 63)
This elementary syllogism is conceptually defective because Keynes NEVER came to grips with profit (Tómasson et al., 2010, p. 12).

4. Rectification
The Keynesian premises have to be replaced by the axiomatically correct macrofoundations. This is achieved as follows.
(A0) The objectively given and most elementary configuration of the (world-) economy consists of the household and the business sector which in turn consists initially of one giant fully integrated firm.
(A1) Yw=WL wage income Yw is equal to wage rate W times working hours. L,
(A2) O=RL output O is equal to productivity R times working hours L,
(A3) C=PX consumption expenditure C is equal to price P times quantity bought/sold X.

For the graphical representation of this ABSOLUTE formal MINIMUM see Wikimedia AXEC31:

(A1) to (A3) asserts: At any given level of employment L, the wage income Yw that is generated in the consolidated business sector follows by multiplication with the wage rate W. On the real side, output O follows by multiplication with the productivity R. Finally, the price P follows as the dependent variable under the conditions of (i) budget balancing, i.e. C=Yw, and (ii), market clearing, i.e. X=O.

Under the conditions (i)|(ii) the price is derived in each period as P=W/R, i.e. the market-clearing price is in the most elementary case equal to unit wage costs which vary over successive periods. This is the macroeconomic Law of Supply and Demand.

In the next period, the households save, i.e. condition (i) is now lifted. The result is shown on Wikimedia AXEC33:

Consumption expenditures C fall below Yw and with it the market-clearing price P. The product market is cleared due to (ii) and there is no such thing as inventory investment, i.e. I=0. Monetary saving of the household sector is given by SmYw−C.

The business sector makes a monetary loss which is equal to the household sector’s saving, i.e. Qm≡−Sm. Therefore, loss is the exact counterpart of saving; by consequence, profit is the exact counterpart of dissaving. This is the most elementary form of the Profit Law. It follows directly from the profit definition Qm≡C−Ym and the definition of household sector saving.

The sector balances always add up to zero, and THIS is the correct accounting identity. Saving and investment are NEVER equal, neither ex-ante nor ex-post.

5. Generalization
The correct profit equation for the investment economy reads Qm≡Yd+I−Sm. Legend Qm: monetary profit, Yd distributed profit, Sm monetary saving, I investment expenditures.

The DIFFERENCE between investment and saving I−Sm, which exists at EVERY moment on the time axis, plus distributed profit Yd determine monetary profit Qm, which is measurable with two decimal places at EVERY moment with an appropriate accounting system.

6. Conclusions
(i) Neither is investment determined by saving (= orthodox error) nor is saving determined by investment (= Keynesian error). Both variables vary independently and are NEVER equal, neither in accounting nor in reality, neither ex-ante nor ex-post because there is NO such thing as an equilibrium of I and S.
(ii) All I=S/IS-LM models from Keynes/Hicks to Krugman are provably false (2014).
(iii) The investment multiplier is formally defective since Keynes.
(iv) Both, orthodox and heterodox profit theories are false. This is the tiny little problem of economics since Adam Smith.
(v) The representative economist has NOT realized (i) to (iv) until this day because of elementary logical/mathematical/accounting incompetence. The Swedish school from Myrdal/Lindahl to Syll is no exception.

Egmont Kakarot-Handtke


References
Kakarot-Handtke, E. (2011a). Keynes’s Missing Axioms. SSRN Working Paper Series, 1841408: 1–33. URL
Kakarot-Handtke, E. (2011b). Why Post Keynesianism is Not Yet a Science. SSRN Working Paper Series, 1966438: 1–20. URL
Kakarot-Handtke, E. (2012). The Common Error of Common Sense: An Essential Rectification of the Accounting Approach. SSRN Working Paper Series, 2124415: 1–23. URL
Kakarot-Handtke, E. (2014). Mr. Keynes, Prof. Krugman, IS-LM, and the End of Economics as We Know It. SSRN Working Paper Series, 2392856: 1–19. URL
Keynes, J. M. (1973). The General Theory of Employment Interest and Money.  London, Basingstoke: Macmillan.
Tómasson, G., and Bezemer, D. J. (2010). What is the Source of Profit and Interest? A Classical Conundrum Reconsidered. MPRA Paper, 20557: 1–34. URL

For more about the worst economic equation/equality/identity/equilibrium see cross-references Refutation of I=S.

For more about Myrdal see AXECquery.

May 24, 2016

Could we, please, all focus on the key question of economics?

Comment on Paul Davidson on ‘Krugman and “what Keynes really meant”’

Blog-Reference

Keynes characterized the situation as follows: “Though we all started out in the same direction, we soon parted company into two main groups. What made the cleavage that thus divided us?” (See intro)

The key question that divides Orthodoxy and Heterodoxy is, in Keynes’ own words: “... is the existing economic system in any significant sense self-adjusting.”

You say “the key question is what causes changes in employment and output in a capitalist market-oriented economy?”

The answer to this question is in the elementary structural Employment Law which is given on  Wikimedia AXEC62:


From this equation follows:
(i) An increase in the expenditure ratio ρE leads to higher employment L (the letter ρ stands for the ratio).
(ii) Increasing investment expenditures I exert a positive influence on employment, a slowdown of growth does the opposite.
(iii) An increase in the factor cost ratio ρF≡W/PR leads to higher employment.

The complete Employment Law is a bit longer and contains in addition profit distribution, public deficit spending, and import/export.

Items (i) and (ii) cover Keynes’ arguments about effective demand. So, the structural Employment Law contains your argument about the determinants of employment: “The answer is changes in the market demand for the products of industry.”

Can we put this undisputed stuff aside now? The critical point is that the original Keynesian multiplier 1/1-c is incomplete, to put it mildly (2012). What is missing is the ratio ρF as defined in (iii). This variable embodies the price mechanism. It works such that overall employment INCREASES if the average wage rate W INCREASES relative to average price P and productivity R, and vice versa.

Now, every half-witted supply-demand-equilibrium economist fancies that the remedy for excess supply in any market is a reduction in price. From whence the claim comes that wage reductions will — in principle — restore full employment. This is the essence of the self-adjustment claim. The strong version, though, is regularly wish-washed by admitting practical hindrances, delays, and imperfections.

The structural Employment Lawn says that wage reductions INCREASE unemployment which means that the market system is — in principle — self-destabilizing. The structural Employment Law is composed of measurable variables and is therefore readily testable. So, Keynes’ key question is unequivocally answerable.

What Post Keynesians have overlooked is that there are TWO ratios in the multiplier, the expenditure ratio ρE and the factor cost ratio ρF. For economic policy, this means: an increase in the expenditure ratio can be counteracted at any time by a decrease of the factor cost ratio, that is, by a falling average wage rate or by a rising average price. The hitherto missing variable explains why Keynesian demand policies are sometimes effective and sometimes ineffective.

This, though, is an implication of the key point. The key point is that the price mechanism does NOT stabilize the market system, neither in the short run nor in the long run. This systemic feature cannot be cured by Keynesian demand management.

The correct answer to Keynes’ question “is the existing economic system in any significant sense self-adjusting?” is NO because (i) aggregate demand is not self-adjusting, and (ii), the structural interrelation between (average) wage rate, price, productivity, and employment moves the system farther away from full employment (2014).

Post Keynesians have to be reprobated for overlooking (ii), which proves that they have no idea about how (a) the price mechanism works, and (b), the profit mechanism works.

Egmont Kakarot-Handtke


References
Kakarot-Handtke, E. (2012). Keynes’ Employment Function and the Gratuitous Phillips Curve Disaster. SSRN Working Paper Series, 2130421: 1–19. URL
Kakarot-Handtke, E. (2014). The Truly General Theory of Employment: How Keynes Could Have Succeeded. SSRN Working Paper Series, 2406891: 1–25. URL

Related 'What Keynes really meant but could not really prove' and 'Proof of the inherent instability of the market economy'.