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Economics Is Like Quantum Physics

Economics / Economic Theory Oct 03, 2019 - 12:27 PM GMT

By: John_Mauldin

Economics

I often say a writer is nothing without readers. I am blessed to have some of the world’s greatest. Your feedback never fails to inspire and enlighten me.

My last week’s That Time Keynes Had a Point letter brought many more comments than usual. Apparently Keynes is still provocative 73 years after his death, no matter what you say about him.

But my real point was about the twisted economic thought that is having dangerous effects on us all. And we can’t blame it just on Keynes.

Today I want to share some of the feedback I received, add a few thoughts, and then show you some real-world consequences that are only getting worse. But first, let me wax philosophic for a minute.


Economic Dispute

This economic dispute is, at its core, a very old argument about how we understand reality. The ancient Greek philosopher Aristotle might agree with some of today’s economists. He taught deductive reasoning with the classic syllogism:

  • All men are mortal
  • Socrates is a man
  • Therefore, Socrates is mortal

In other words, Aristotle said to move from general principles to specific conclusions. That’s what the bulk of modern macroeconomics does, using their (much more elaborate) models to deduce the “best” policy choices.

Centuries later, Sir Francis Bacon turned Aristotle upside down when he advocated inductive reasoning.

Rather than start with broad principles and apply them everywhere, he said to presuppose nothing, observe events and move from specific to general as you gather more observations… what we now call the “scientific method.”

Today’s economists may think that’s what they are doing, but they often aren’t. They begin with models that purport to include all the important variables, then fit facts into the model. When the facts don’t fit, they look for new ones, never considering that the model itself may be flawed.

Furthermore, as I have shown time and time again, they assume away reality in order to construct models that are in “equilibrium” with themselves. This is supposed to give us insight into the reality that has been assumed away.

That process isn’t necessarily wrong, but it’s not science. It is the opposite of science. Bacon would be horrified to see this. He tried to show the world a better way and now, centuries later, some of our most learned professors still don’t get it.

This is sadly not just a philosophical argument. It has real consequences for real people, including you and me.

Uncertainty Principle

Speaking of science, I received this note from an actual scientist (i.e., not an economist).

Dear John, having been an avid reader of your articles for many years now I wanted to write to say how much I tend to agree with your commentary, and in particular how much I enjoyed this week's article. I'd like to make a couple of comments about this week's material.

Firstly, reference was made to comparing economics with physics, and how economists suffer from "physics envy" (I should say that I have a PhD in physics from Oxford and subsequently worked as a physicist at the European Center for Nuclear Physics Research (CERN) in Geneva, Switzerland, although I left behind my career as a physicist a long time ago.)

Economies and financial markets are much more like the world of quantum mechanics than the world of classical physics. In classical physics there is complete independence between the observer and the system under observation. However, in the realms of quantum mechanics, the systems under observation are so small that the act of observation disturbs the system itself, described by Heisenberg's Uncertainty Principle.

This situation is similar to that of financial markets, where the actions of market players is not separate from market outcomes; rather the actions of market players PRODUCE the market outcomes.

Betting on financial markets is different from betting on the outcome of an independent event, such as the outcome of a horse race or a football match. The latter are akin to classical physics where there is independence between observer and observed. Whilst actions in the betting market change the odds on which horse/team is favored to win, they don't impact the outcome of the event, which is rather determined by the best horse/team on the day. —Paul Shotton

Thank you, Paul, for pointing out this important distinction. I can’t pretend to understand quantum mechanics but your point about independent observation is profound.

Economists don’t just build models; they (and all of us) are parts of the model. We are the economy and the economy is us. While discussing it, we also affect it.

George Soros calls this the principle of reflexivity, the idea that a two-way feedback loop exists in which investors' perceptions affect that environment, which in turn changes investor perceptions. (Here’s his essay explaining more.)

That means these macroeconomic models, which with their Greek letters and complex equations look very scientific to a layperson, are often at odds with the scientific method.

You can’t conduct independent observations and experiments on an entire economy. That doesn’t render the models completely useless, but greatly limits them.

Borrowing from Clint Eastwood, this might be fine if those who use these models would respect the limitations. All too often, they don’t. And this is where it gets a little complicated.

I confess that I use models. I build them and work with others who build even better ones. Models can help inform us of potential outcomes and better understand risk and reward.

But there are clearly inherent limitations on using historical or theoretical observations to predict future results.

(Dis) Equilibrium

Here are a couple more letters, taking issue with my comments on equilibrium.

Just to clarify… Even if the economy can be modeled in some sense by a sand pile that will ultimately collapse, that does not mean that the economy is, at any point in time, not in equilibrium. In fact, it must be in equilibrium in order to form the sand pile! You could argue that the equilibrium is “unstable,” perhaps, but it is certainly a (possibly unstable) equilibrium. —John Bruch

***

John, I’ve been a reader for years and love your letter. But your comment today is over the top; “The entire premise of equilibrium economics is false.” Efficient market hypothesis is over the top but the premise of equilibrium is perfectly modeled in your sand pile letter. Cycles have always existed and always will exist.

Natural market forces will always move markets towards equilibrium but government interference slows the process making the sand pile grow in size and magnitude. To say that the principle of equilibrium is false is just ignoring reality.

The economy is like our forests. When a fire starts in the forest you let it burn so that nature’s cycle can run its course. If you keep putting out the fire you build excess fuel and then at some point you have a catastrophic fire that no humans can control. Mother Nature eventually steps in and puts out the fire and puts life back into equilibrium.

I agree that we need to rethink economics. But the principle of equilibrium, however short lived that moment in time is, is a sure reality. —Dennis Carver

John and Dennis raise an interesting question. The mere fact that the “sand pile” exists intact for some period of time means that equilibrium exists for that interval. Fair enough. The grains of sand do, in fact, line up so that they don’t collapse.

But we are constantly adding more sand and each additional grain changes the equilibrium. The previous equilibrium ends at that point, having been so brief as to be meaningless.

Eventually a grain of sand will create an unstable equilibrium, causing the pile to partially or completely collapse (and then be in equilibrium once again). So if no single state of equilibrium can exist for more than an instant, I would argue it’s not really “equilibrium” for any practical purpose. We can’t rely on it to continue. Every moment brings a new, unknown situation.

Let’s look at it another way. The sandpile model assumes there will be moments of instability. In economic terms, we are experiencing transitory equilibrium. The sandpile model is inherently unstable, a perfect example of Minsky’s Financial Instability Hypothesis: Stability leads to instability and the longer the period of stability, the greater the instability will be at the end.

(Nassim Taleb’s Antifragility Principle is important to understand when we think about equilibrium, or rather the lack of it. His book Antifragile is important and you should at least read the first half.)

My old friend and early economics mentor Dr. Gary North sees this idea of “equilibrium” as not just wrong, but downright evil.

In his 1963 textbook for upper division economics students, [Israel] Kirzner wrote about the assumptions of economists regarding the use of equilibrium as an explanatory model. They use it to describe the system of feedback that the price system provides the market place. “The state of equilibrium should be looked upon as an imaginary situation where there is a complete dovetailing of the decisions made by all the participating individuals.”

This means not only perfect knowledge of available economic opportunities, but also men’s universal willingness to cooperate with each other. In short, it conceives of men as angels in heaven, with fallen angels having conveniently departed for hell and its constant disequilibrium, where totalitarian central power is needed to co-ordinate their efforts. “A market that is not in equilibrium should be looked upon as reflecting a discordancy between the various decisions being made.”

The heart of free market economic analysis is the concept of monetary profits and losses as feedback devices that persuade people to cooperate with each other in order to increase their wealth. “But the theorist knows that the very fact of disequilibrium itself sets into motion forces that tend to bring about equilibrium (with respect to current market attitudes)” (Market Theory and the Price System, p. 23). Presumably, even devils cooperate on this basis. They, too, prefer profits to losses.

Biblically speaking, this theory of equilibrium is wrong. It is not just wrong; it is evil. It adopts the idea of man as God as its foremost conceptual tool to explain people’s economic behavior. It explains the market process as man’s move in the direction of divinity. Economists are not content to explain the price system as a useful arrangement that rewards people with accurate knowledge who voluntary cooperate with each other. They explain the economic progress of man and the improvement of man’s knowledge as a pathway to divinity, however hypothetical. The science of economics in its humanist framework rests on the divinization of man as a conceptual ideal.

Setting aside the theology, the point here is that economists assume human beings are perfectly rational and consistent, or at least wish to be. That’s what makes equilibrium possible.

But we know humans aren’t perfect or consistent. So how can we have equilibrium? We can’t, unless we assume markets are in equilibrium because they act in a manner we deem appropriate or ideal.

Insane Ideas

Again, this isn’t an academic argument. People who believe these ideas either hold seats of power or have influence on those who do. They truly think they can twist some knobs on their models and make everything better.

If we just had better monetary or fiscal policy, if the government could tax the right people and distribute the money correctly, everyone would be so much better off. And of course, their highly complex models and theories will conveniently lead to their desired political conclusions.

It is increasingly obvious that conventional , and everyone believes they will remain low. monetary policy is useless now that rates have been so low for so long

Nothing the central banks do incentivizes anyone to make immediate growth-generating decisions. If you need to borrow money, you likely did it long ago.

A new Deutsche Bank analysis says the major world economies now have government debt, on average, exceeding 70% of GDP, the highest peacetime level of the past 150 years.


This is obviously unsustainable but the economics profession (and the bankers) desperately want to sustain it. With monetary tools no longer useful, they are turning to fiscal policy. Serious people are mapping strategies like helicopter money, debt monetization, MMT, and worse.

These all, in various ways, essentially say that government debt doesn’t matter, and in some cases we actually need more of it. Historically, the only way that can be right is if we are on the cusp of another WW2-like crisis.

This horrifying but well-researched Bloomberg article is chock full of links to insane ideas. Some look superficially attractive, especially to those unfamiliar with even basic economics. Many have familiar, heavyweight names attached to them. All have, to me at least, a whiff of desperation. They are frantic attempts to make the world stop spinning.

I don’t think these ideas will work. I think we are beyond the black hole’s event horizon. Bad things are going to happen, culminating in some kind of globally coordinated debt liquidation I have dubbed the Great Reset. I really see no other way out.

Every day brings more signs of the impending crisis. Duke University’s latest quarterly CFO survey found more than half of finance chiefs foresee a US recession before the 2020 election. Possibly worse, they project only a 1% increase in capital spending over the next 12 months.

An economy in which near-zero interest rates can’t spur more investment than that is an economy with serious problems. And I expect them to get worse, not better.

Furthermore, an increasing body of evidence says that increasing sovereign debt is a slow but inexorable drag on GDP. It is like the frog being boiled in water, but so slowly that we as citizens don’t really understand what is happening to us. We do sense something is wrong, though. Hence today’s worldwide populist movements.

The driver for 1930s populism was the Great Depression and unemployment. Now the impetus is rising debt and underemployment, with people unable to improve their lives as past generations did. Millions no longer expect to be better off economically than their parents. That frustration is sparking unproductive political partisanship and has the potential to bring political chaos as governments try to protect their own technology and businesses.

The world in general has clearly benefited from globalization and automation, but that is a hard argument to make as jobs disappear. And more jobs will disappear as technology increasingly lets businesses replace expensive humans with cheap robotics and algorithms. Sigh… I wish I had answers. Well, I do, but I don’t think they’ll going to get a great deal of traction.

This won’t be the end of the world. I really do think there are ways that you can properly position your portfolio and your personal life to not just survive but to thrive. We will get through it and be better on the other side. But it’s going to be a bumpy ride.

The Great Reset: The Collapse of the Biggest Bubble in History
New York Times best seller and renowned financial expert John Mauldin predicts an unprecedented financial crisis that could be triggered in the next five years. Most investors seem completely unaware of the relentless pressure that’s building right now. Learn more here.

Disclaimer: The above is a matter of opinion provided for general information purposes only and is not intended as investment advice. Information and analysis above are derived from sources and utilising methods believed to be reliable, but we cannot accept responsibility for any losses you may incur as a result of this analysis. Individuals should consult with their personal financial advisors.

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