prosperity

We do seem to have better angels after all

PNRJ book reviews, core principles, development economics, ethics, futurism, inequality, public policy , , , , , , , , , , ,

Jun 18 JDN 2460114

A review of The Darker Angels of Our Nature

(I apologize for not releasing this on Sunday; I’ve been traveling lately and haven’t found much time to write.)

Since its release, I have considered Steven Pinker’s The Better Angels of our Nature among a small elite category of truly great books—not simply good because enjoyable, informative, or well-written, but great in its potential impact on humanity’s future. Others include The General Theory of Employment, Interest, and Money, On the Origin of Species, and Animal Liberation.

But I also try to expose myself as much as I can to alternative views. I am quite fearful of the echo chambers that social media puts us in, where dissent is quietly hidden from view and groupthink prevails.

So when I saw that a group of historians had written a scathing critique of The Better Angels, I decided I surely must read it and get its point of view. This book is The Darker Angels of Our Nature.

The Darker Angels is written by a large number of different historians, and it shows. It’s an extremely disjointed book; it does not present any particular overall argument, various sections differ wildly in scope and tone, and sometimes they even contradict each other. It really isn’t a book in the usual sense; it’s a collection of essays whose only common theme is that they disagree with Steven Pinker.

In fact, even that isn’t quite true, as some of the best essays in The Darker Angels are actually the ones that don’t fundamentally challenge Pinker’s contention that global violence has been on a long-term decline for centuries and is now near its lowest in human history. These essays instead offer interesting insights into particular historical eras, such as medieval Europe, early modern Russia, and shogunate Japan, or they add additional nuances to the overall pattern, like the fact that, compared to medieval times, violence in Europe seems to have been less in the Pax Romana (before) and greater in the early modern period (after), showing that the decline in violence was not simple or steady, but went through fluctuations and reversals as societies and institutions changed. (At this point I feel I should note that Pinker clearly would not disagree with this—several of the authors seem to think he would, which makes me wonder if they even read The Better Angels.)

Others point out that the scale of civilization seems to matter, that more is different, and larger societies and armies more or less automatically seem to result in lower fatality rates by some sort of scaling or centralization effect, almost like the square-cube law. That’s very interesting if true; it would suggest that in order to reduce violence, you don’t really need any particular mode of government, you just need something that unites as many people as possible under one banner. The evidence presented for it was too weak for me to say whether it’s really true, however, and there was really no theoretical mechanism proposed whatsoever.

Some of the essays correct genuine errors Pinker made, some of which look rather sloppy. Pinker clearly overestimated the death tolls of the An Lushan Rebellion, the Spanish Inquisition, and Aztec ritual executions, probably by using outdated or biased sources. (Though they were all still extremely violent!) His depiction of indigenous cultures does paint with a very broad brush, and fails to recognize that some indigenous societies seem to have been quite peaceful (though others absolutely were tremendously violent).

One of the best essays is about Pinker’s cavalier attitude toward mass incarceration, which I absolutely do consider a deep flaw in Pinker’s view. Pinker presents increased incarceration rates along with decreased crime rates as if they were an unalloyed good, while I can at best be ambivalent about whether the benefit of decreasing crime is worth the cost of greater incarceration. Pinker seems to take for granted that these incarcerations are fair and impartial, when we have a great deal of evidence that they are strongly biased against poor people and people of color.

There’s another good essay about the Enlightenment, which Pinker seems to idealize a little too much (especially in his other book Enlightenment Now). There was no sudden triumph of reason that instantly changed the world. Human knowledge and rationality gradually improved over a very long period of time, with no obvious turning point and many cases of backsliding. The scientific method isn’t a simple, infallible algorithm that suddenly appeared in the brain of Galileo or Bayes, but a whole constellation of methods and concepts of rationality that took centuries to develop and is in fact still developing. (Much as the Tao that can be told is not the eternal Tao, the scientific method that can be written in a textbook is not the true scientific method.)

Several of the essays point out the limitations of historical and (especially) archaeological records, making it difficult to draw any useful inferences about rates of violence in the past. I agree that Pinker seems a little too cavalier about this; the records really are quite sparse and it’s not easy to fill in the gaps. Very small samples can easily distort homicide rates; since only about 1% of deaths worldwide are homicide, if you find 20 bodies, whether or not one of them was murdered is the difference between peaceful Japan and war-torn Colombia.

On the other hand, all we really can do is make the best inferences we have with the available data, and for the time periods in which we do have detailed records—surely true since at least the 19th century—the pattern of declining violence is very clear, and even the World Wars look like brief fluctuations rather than fundamental reversals. Contrary to popular belief, the World Wars do not appear to have been especially deadly on a per-capita basis, compared to various historic wars. The primary reason so many people died in the World Wars was really that there just were more people in the world. A few of the authors don’t seem to consider this an adequate reason, but ask yourself this: Would you rather live in a society of 100 in which 10 people are killed, or a society of 1 billion in which 1 million are killed? In the former case your chances of being killed are 10%; in the latter, 0.1%. Clearly, per-capita measures of violence are the correct ones.

Some essays seem a bit beside the point, like one on “environmental violence” which quite aptly details the ongoing—terrifying—degradation of our global ecology, but somehow seems to think that this constitutes violence when it obviously doesn’t. There is widespread violence against animals, certainly; slaughterhouses are the obvious example—and unlike most people, I do not consider them some kind of exception we can simply ignore. We do in fact accept levels of cruelty to pigs and cows that we would never accept against dogs or horses—even the law makes such exceptions. Moreover, plenty of habitat destruction is accompanied by killing of the animals who lived in that habitat. But ecological degradation is not equivalent to violence. (Nor is it clear to me that our treatment of animals is more violent overall today than in the past; I guess life is probably worse for a beef cow today than it was in the medieval era, but either way, she was going to be killed and eaten. And at least we no longer do cat-burning.) Drilling for oil can be harmful, but it is not violent. We can acknowledge that life is more peaceful now than in the past without claiming that everything is better now—in fact, one could even say that overall life isn’t better, but I think they’d be hard-pressed to argue that.

These are the relatively good essays, which correct minor errors or add interesting nuances. There are also some really awful essays in the mix.

A common theme of several of the essays seems to be “there are still bad things, so we can’t say anything is getting better”; they will point out various forms of violence that undeniably still exist, and treat this as a conclusive argument against the claim that violence has declined. Yes, modern slavery does exist, and it is a very serious problem; but it clearly is not the same kind of atrocity that the Atlantic slave trade was. Yes, there are still murders. Yes, there are still wars. Probably these things will always be with us to some extent; but there is a very clear difference between 500 homicides per million people per year and 50—and it would be better still if we could bring it down to 5.

There’s one essay about sexual violence that doesn’t present any evidence whatsoever to contradict the claim that rates of sexual violence have been declining while rates of reporting and prosecution have been increasing. (These two trends together often result in reported rapes going up, but most experts agree that actual rapes are going down.) The entire essay is based on anecdote, innuendo, and righteous anger.

There are several essays that spend their whole time denouncing neoliberal capitalism (not even presenting any particularly good arguments against it, though such arguments do exist), seeming to equate Pinker’s view with some kind of Rothbardian anarcho-capitalism when in fact Pinker is explictly in favor of Nordic-style social democracy. (One literally dismisses his support for universal healthcare as “Well, he is Canadian”.) But Pinker has on occasion said good things about capitalism, so clearly, he is an irredeemable monster.

Right in the introduction—which almost made me put the book down—is an astonishingly ludicrous argument, which I must quote in full to show you that it is not out of context:

What actually is violence (nowhere posed or answered in The Better Angels)? How do people perceive it in different time-place settings? What is its purpose and function? What were contemporary attitudes toward violence and how did sensibilities shift over time? Is violence always ‘bad’ or can there be ‘good’ violence, violence that is regenerative and creative?

The Darker Angels of Our Nature, p.16

Yes, the scare quotes on ‘good’ and ‘bad’ are in the original. (Also the baffling jargon “time-place settings” as opposed to, say, “times and places”.) This was clearly written by a moral relativist. Aside from questioning whether we can say anything about anything, the argument seems to be that Pinker’s argument is invalid because he didn’t precisely define every single relevant concept, even though it’s honestly pretty obvious what the world “violence” means and how he is using it. (If anything, it’s these authors who don’t seem to understand what the word means; they keep calling things “violence” that are indeed bad, but obviously aren’t violence—like pollution and cyberbullying. At least talk of incarceration as “structural violence” isn’t obvious nonsense—though it is still clearly distinct from murder rates.)

But it was by reading the worst essays that I think I gained the most insight into what this debate is really about. Several of the essays in The Darker Angels thoroughly and unquestioningly share the following inference: if a culture is superior, then that culture has a right to impose itself on others by force. On this, they seem to agree with the imperialists: If you’re better, that gives you a right to dominate everyone else. They rightly reject the claim that cultures have a right to imperialistically dominate others, but they cannot deny the inference, and so they are forced to deny that any culture can ever be superior to another. The result is that they tie themselves in knots trying to justify how greater wealth, greater happiness, less violence, and babies not dying aren’t actually good things. They end up talking nonsense about “violence that is regenerative and creative”.

But we can believe in civilization without believing in colonialism. And indeed that is precisely what I (along with Pinker) believe: That democracy is better than autocracy, that free speech is better than censorship, that health is better than illness, that prosperity is better than poverty, that peace is better than war—and therefore that Western civilization is doing a better job than the rest. I do not believe that this justifies the long history of Western colonial imperialism. Governing your own country well doesn’t give you the right to invade and dominate other countries. Indeed, part of what makes colonial imperialism so terrible is that it makes a mockery of the very ideals of peace, justice, and freedom that the West is supposed to represent.

I think part of the problem is that many people see the world in zero-sum terms, and believe that the West’s prosperity could only be purchased by the rest of the world’s poverty. But this is untrue. The world is nonzero-sum. My happiness does not come from your sadness, and my wealth does not come from your poverty. In fact, even the West was poor for most of history, and we are far more prosperous now that we have largely abandoned colonial imperialism than we ever were in imperialism’s heyday. (I do occasionally encounter British people who seem vaguely nostalgic for the days of the empire, but real median income in the UK has doubled just since 1977. Inequality has also increased during that time, which is definitely a problem; but the UK is undeniably richer now than it ever was at the peak of the empire.)

In fact it could be that the West is richer now because of colonalism than it would have been without it. I don’t know whether or not this is true. I suspect it isn’t, but I really don’t know for sure. My guess would be that colonized countries are poorer, but colonizer countries are not richer—that is, colonialism is purely destructive. Certain individuals clearly got richer by such depredation (Leopold II, anyone?), but I’m not convinced many countries did.

Yet even if colonialism did make the West richer, it clearly cannot explain most of the wealth of Western civilization—for that wealth simply did not exist in the world before. All these bridges and power plants, laptops and airplanes weren’t lying around waiting to be stolen. Surely, some of the ingredients were stolen—not least, the land. Had they been bought at fair prices, the result might have been less wealth for us (then again it might not, for wealthier trade partners yield greater exports). But this does not mean that the products themselves constitute theft, nor that the wealth they provide is meaningless. Perhaps we should find some way to pay reparations; undeniably, we should work toward greater justice in the future. But we do not need to give up all we have in order to achieve that justice.

There is a law of conservation of energy. It is impossible to create energy in one place without removing it from another. There is no law of conservation of prosperity. Making the world better in one place does not require making it worse in another.

Progress is real. Yes, it is flawed, uneven, and it has costs of its own; but it is real. If we want to have more of it, we best continue to believe in it. And The Better Angels of Our Nature does have some notable flaws, but it still retains its place among truly great books.

What makes a nation wealthy?

PNRJ core principles, development economics , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

JDN 2457251 EDT 10:17

One of the central questions of economics—perhaps the central question, the primary reason why economics is necessary and worthwhile—is development: How do we raise a nation from poverty to prosperity?

We have done it before: France and Germany rose from the quite literal ashes of World War 2 to some of the most prosperous societies in the world. Their per-capita GDP over the 20th century rose like this (all of these figures are from the World Bank World Development Indicators; France is green, Germany is blue):

GDPPC_France_Germany

GDPPCPPP_France_Germany

The top graph is at market exchange rates, the bottom is correcting for purchasing power parity (PPP). The PPP figures are more meaningful, but unfortunately they only began collecting good data on purchasing power around 1990.

Around the same time, but even more spectacularly, Japan and South Korea rose from poverty-stricken Third World backwaters to high-tech First World powers in only a couple of generations. Check out their per-capita GDP over the 20th century (Japan is green, South Korea is blue):

GDPPC_Japan_KoreaGDPPCPPP_Japan_Korea


This is why I am only half-joking when I define development economics as “the ongoing project to figure out what happened in South Korea and make it happen everywhere in the world”.

More recently China has been on a similar upward trajectory, which is particularly important since China comprises such a huge portion of the world’s population—but they are far from finished:

GDPPC_ChinaGDPPCPPP_China

Compare these to societies that have not achieved economic development, such as Zimbabwe (green), India (black), Ghana (red), and Haiti (blue):

GDPPC_poor_countriesGDPPCPPP_poor_countries

They’re so poor that you can barely see them on the same scale, so I’ve rescaled so that the top is $5,000 per person per year instead of $50,000:

GDPPC_poor_countries_rescaledGDPPCPPP_poor_countries_rescaled

Only India actually manages to get above $5,000 per person per year at purchasing power parity, and then not by much, reaching $5,243 per person per year in 2013, the most recent data.

I had wanted to compare North Korea and South Korea, because the two countries were united as recently as the 1945 and were not all that different to begin with, yet have taken completely different development trajectories. Unfortunately, North Korea is so impoverished, corrupt, and authoritarian that the World Bank doesn’t even report data on their per-capita GDP. Perhaps that is contrast enough?

And then of course there are the countries in between, which have made some gains but still have a long way to go, such as Uruguay (green) and Botswana (blue):

GDPPC_Botswana_UruguayGDPPCPPP_Botswana_Uruguay

But despite the fact that we have observed successful economic development, we still don’t really understand how it works. A number of theories have been proposed, involving a wide range of factors including exports, corruption, disease, institutions of government, liberalized financial markets, and natural resources (counter-intuitively; more natural resources make your development worse).

I’m not going to resolve that whole debate in a single blog post. (I may not be able to resolve that whole debate in a single career, though I am definitely trying.) We may ultimately find that economic development is best conceived as like “health”; what factors determine your health? Well, a lot of things, and if any one thing goes badly enough wrong the whole system can break down. Economists may need to start thinking of ourselves as akin to doctors (or as Keynes famously said, dentists), diagnosing particular disorders in particular patients rather than seeking one unifying theory. On the other hand, doctors depend upon biologists, and it’s not clear that we yet understand development even at that level.

Instead I want to take a step back, and ask a more fundamental question: What do we mean by prosperity?

My hope is that if we can better understand what it is we are trying to achieve, we can also better understand the steps we need to take in order to get there.

Thus far it has sort of been “I know it when I see it”; we take it as more or less given that the United States and the United Kingdom are prosperous while Ghana and Haiti are not. I certainly don’t disagree with that particular conclusion; I’m just asking what we’re basing it on, so that we can hopefully better apply it to more marginal cases.


For example: Is France more or less prosperous than Saudi Arabia? If we go solely by GDP per capita PPP, clearly Saudi Arabia is more prosperous at $53,100 per person per year than France is at $37,200 per person per year.

But people actually live longer in France, on average, than they do in Saudi Arabia. Overall reported happiness is higher in France than Saudi Arabia. I think France is actually more prosperous.


In fact, I think the United States is not as prosperous as we pretend ourselves to be. We are certainly more prosperous than most other countries; we are definitely still well within First World status. But we are not the most prosperous nation in the world.

Our total GDP is astonishingly high (highest in the world nominally, second only to China PPP). Our GDP per-capita is higher than any other country of comparable size; no nation with higher GDP PPP than the US has a population larger than the Chicago metropolitan area. (You may be surprised to find that in order from largest to smallest population the countries with higher GDP per capita PPP are the United Arab Emirates, Switzerland, Hong Kong, Singapore, and then Norway, followed by Kuwait, Qatar, Luxembourg, Brunei, and finally San Marino—which is smaller than Ann Arbor.) Our per-capita GDP PPP of $51,300 is markedly higher than that of France ($37,200), Germany ($42,900), or Sweden ($43,500).

But at the same time, if you compare the US to other First World countries, we have nearly the highest rate of child poverty and higher infant mortality. We have shorter life expectancy and dramatically higher homicide rates. Our inequality is the highest in the world. In France and Sweden, the top 0.01% receive about 1% of the income (i.e. 100 times as much as the average person), while in the United States they receive almost 4%, making someone in the top 0.01% nearly 400 times as rich as the average person.

By estimating solely on GDP per capita, we are effectively rigging the game in our own favor. Or rather, the rich in the United States are rigging the game in their own favor (what else is new?), by convincing all the world’s economists to rank countries based on a measure that favors them.

Amartya Sen, one of the greats of development economics, developed a scale called the Human Development Index that attempts to take broader factors into account. It’s far from perfect, but it’s definitely a step in the right direction.

In particular, France’s HDI is higher than that of Saudi Arabia, fitting my intuition about which country is truly more prosperous. However, the US still does extremely well, with only Norway, Australia, Switzerland, and the Netherlands above us. I think we might still be biased toward high average incomes rather than overall happiness.

In practice, we still use GDP an awful lot, probably because it’s much easier to measure. It’s sort of like IQ tests and SAT scores; we know damn well it’s not measuring what we really care about, but because it’s so much easier to work with we keep using it anyway.

This is a problem, because the better you get at optimizing toward the wrong goal, the worse your overall outcomes are going to be. If you are just sort of vaguely pointed at several reasonable goals, you will probably be improving your situation overall. But when you start precisely optimizing to a specific wrong goal, it can drag you wildly off course.

This is what we mean when we talk about “gaming the system”. Consider test scores, for example. If you do things that will probably increase your test scores among other things, you are likely to engage in generally good behaviors like getting enough sleep, going to class, studying the content. But if your single goal is to maximize your test score at all costs, what will you do? Cheat, of course.

This is also related to the Friendly AI Problem: It is vitally important to know precisely what goals we want our artificial intelligences to have, because whatever goals we set, they will probably be very good at achieving them. Already computers can do many things that were previously impossible, and as they improve over time we will reach the point where in a meaningful sense our AIs are even smarter than we are. When that day comes, we will want to make very, very sure that we have designed them to want the same things that we do—because if our desires ever come into conflict, theirs are likely to win. The really scary part is that right now most of our AI research is done by for-profit corporations or the military, and “maximize my profit” and “kill that target” are most definitely not the ultimate goals we want in a superintelligent AI. It’s trivially easy to see what’s wrong with these goals: For the former, hack into the world banking system and transfer trillions of dollars to the company accounts. For the latter, hack into the nuclear launch system and launch a few ICBMs in the general vicinity of the target. Yet these are the goals we’ve been programming into the actual AIs we build!

If we set GDP per capita as our ultimate goal to the exclusion of all other goals, there are all sorts of bad policies we would implement: We’d ignore inequality until it reached staggering heights, ignore work stress even as it began to kill us, constantly try to maximize the pressure for everyone to work constantly, use poverty as a stick to force people to work even if people starve, inundate everyone with ads to get them to spend as much as possible, repeal regulations that protect the environment, workers, and public health… wait. This isn’t actually hypothetical, is it? We are doing those things.

At least we’re not trying to maximize nominal GDP, or we’d have long-since ended up like Zimbabwe. No, our economists are at least smart enough to adjust for purchasing power. But they’re still designing an economic system that works us all to death to maximize the number of gadgets that come off assembly lines. The purchasing-power adjustment doesn’t include the value of our health or free time.

This is why the Human Development Index is a major step in the right direction; it reminds us that society has other goals besides maximizing the total amount of money that changes hands (because that’s actually all that GDP is measuring; if you get something for free, it isn’t counted in GDP). More recent refinements include things like “natural resource services” that include environmental degradation in estimates of investment. Unfortunately there is no accepted way of doing this, and surprisingly little research on how to improve our accounting methods. Many nations seem resistant to doing so precisely because they know it would make their economic policy look bad—this is almost certainly why China canceled its “green GDP” initiative. This is in fact all the more reason to do it; if it shows that our policy is bad, that means our policy is bad and should be fixed. But people have allowed themselves to value image over substance.

We can do better still, and in fact I think something like QALY is probably the way to go. Rather than some weird arbitrary scaling of GDP with lifespan and Gini index (which is what the HDI is), we need to put everything in the same units, and those units must be directly linked to human happiness. At the very least, we should make some sort of adjustment to our GDP calculation that includes the distribution of wealth and its marginal utility; adding $1,000 to the economy and handing it to someone in poverty should count for a great deal, but adding $1,000,000 and handing it to a billionaire should count for basically nothing. (It’s not bad to give a billionaire another million; but it’s hardly good either, as no one’s real standard of living will change.) Calculating that could be as simple as dividing by their current income; if your annual income is $10,000 and you receive $1,000, you’ve added about 0.1 QALY. If your annual income is $1 billion and you receive $1 million, you’ve added only 0.001 QALY. Maybe we should simply separate out all individual (or household, to be simpler?) incomes, take their logarithms, and then use that sum as our “utility-adjusted GDP”. The results would no doubt be quite different.

This would create a strong pressure for policy to be directed at reducing inequality even at the expense of some economic output—which is exactly what we should be willing to do. If it’s really true that a redistribution policy would hurt the overall economy so much that the harms would outweigh the benefits, then we shouldn’t do that policy; but that is what you need to show. Reducing total GDP is not a sufficient reason to reject a redistribution policy, because it’s quite possible—easy, in fact—to improve the overall prosperity of a society while still reducing its GDP. There are in fact redistribution policies so disastrous they make things worse: The Soviet Union had them. But a 90% tax on million-dollar incomes would not be such a policy—because we had that in 1960 with little or no ill effect.

Of course, even this has problems; one way to minimize poverty would be to exclude, relocate, or even murder all your poor people. (The Black Death increased per-capita GDP.) Open immigration generally increases poverty rates in the short term, because most of the immigrants are poor. Somehow we’d need to correct for that, only raising the score if you actually improve people’s lives, and not if you make them excluded from the calculation.

In any case it’s not enough to have the alternative measures; we must actually use them. We must get policymakers to stop talking about “economic growth” and start talking about “human development”; a policy that raises GDP but reduces lifespan should be immediately rejected, as should one that further enriches a few at the expense of many others. We must shift the discussion away from “creating jobs”—jobs are only a means—to “creating prosperity”.