Saturday, 31 October 2015

Rap is capitalist


The economics of rap lyrics would be an interesting subject for a pop econ book.

When I was a kid, I barely listened to rap, and most of what I knew was West Coast "gangsta rap." To me, gangsta rap was basically a form of chivalric fiction -  a glorification of the honorable, violent lifestyle of warriors in an anarchic society. It was all just "Mine enemies besmirched my honor, so I smote them down with the strength of my good right arm." Medieval knights were basically just gangsters, after all, so it makes sense that they'd have similar romantic myths.

I also was dimly aware of protest rap ("Fuck tha Police", Public Enemy, KRS-One, etc.) and 80s dance rap (a variant of goofy 80s dance music).

But as I got older and started to listen to more rap, I noticed one theme that was overwhelmingly common, and seemed to be getting more dominant: the rags-to-riches story. A huge amount of rap these days, and for at least the last ten years, has lyrics that are a variation on: "I was poor, then I made high-quality entertainment products, and now I am rich!"

For example, here's an excerpt from "Started From the Bottom," by Drake:
I done kept it real from the jump
Living at my mama's house we'd argue every mornin' nigga,
I was trying to get it on my own
Working all night, traffic on the way home
And my uncle calling me like "Where ya at?
I gave you the keys told ya bring it right back"
Nigga, I just think it's funny how it goes
Now I'm on the road, half a million for a show
This theme is absolutely ubiquitous. In the late 90s and early 2000s, around the time I started listening to more rap, it seemed to be totally replacing gangsta rap as the dominant lyrical message.

One interesting thing is how overwhelmingly capitalist this theme is. A number of (white) lefty humanities students I meet are quite enamored of rap, viewing it as a form of protest against the structural injustice of the capitalist system. But barely any of that has been popular for many years now. The overwhelming majority of the mainstream popular rap music from the last decade and a half has been about working hard, taking risks, reaping financial rewards, and enjoying a money-driven status-conscious consumerist lifestyle. In other words, a total and utter embrace of the capitalist dream. Of course, the successful business exploits of rappers themselves are now well-known; the capitalist dream goes way beyond music-making.

Modern rap also puts the lie to the idea, popular in right-wing media, that rap encourages a culture of poverty. That was true of gangsta rap - even if he amasses money and power, a gangster is expected to stay in his community and remain true to the lifestyle of the streets (much like the ideal of noble poverty in chivalric fiction). But modern capitalist rap is about hard work and risk-taking in the pursuit of prosperity - exactly the kind of values conservatives ostensibly want people to have. Ludacris, whose music O'Reilly has repeatedly failed to recognize for the satire that it is, even has a song advocating Randian selfishness.

So I think both lefties and conservatives get modern rap fundamentally wrong. It's just Horatio Alger, updated for a wealthier, more liberal, mass-media-driven age.

But rap is about the culture of Black America, and therefore it is about scarcity. You can't have rags-to-riches without the rags. Black America is much poorer than the rest of the country, and is therefore a world defined by the daily experience of scarcity; it's a world where every constraint always binds. That makes for some interesting economics.

For example, the drug trade figures prominently in rappers' stories of how they survived before getting rich. The standard rapper autobiographical tale has the rapper selling drugs until his music career takes off. Usually, this involves taking large risks, since it involves operating outside of the protection of the law. This, of course, demonstrates many of the unintended negative consequences of government prohibition of commodities.

Also, a world of scarcity is a world where transaction costs are too high for many kinds of market institutions to function. For example, equity markets. Here is an excerpt from Future's "Where Ya At":
Where your ass was at, dog, when I was in the Pyrex?
Where your ass was at, dog, when I was drinking Hi-Tech?
Where your ass was at, dog, came through the projects?
Where your ass at we keep that fully loaded contracts?
and also:
Where your ass was at when I was trapping in the stove?
Had to struggle to get where I'm at and sell dope
The song is addressed to someone who wants some kind of unspecified favors from Future now that he's a rich, successful musician, but who refused to help Future when he was a poor, struggling chemical manufacturer. Unfortunately, given the lack of formal equity markets, the dispute over just how much the person helped Future must be resolved by extra-legal means. Informal purchasing contracts, barter, and other economic workarounds also make frequent appearances in rap lyrics.

I don't think I'm reading too much into these songs, either; rappers themselves are obviously acutely aware of the importance of good formal economic institutions.

Rap lyrics paint a picture of how government has influenced the economy of African-American society, especially via the War on Drugs. An economic niche has been carved out and reserved for poor Americans. That niche offers the promise of a middle-class income, but at the price of horrible risk to life and limb. It has encouraged informal marketplaces with weak institutions, leading to high transaction costs and numerous market failures.

No wonder rappers are so proud at having escaped that situation and made it into the regular economy! I know I would be. Perhaps our politicians should listen to more rap music.

Monday, 26 October 2015

Russ Roberts predicts my policy positions


Earlier this year, there was an interesting debate between Russ Roberts of EconTalk and Adam Ozimek of Forbes about ideology and economics. Basically, Roberts (mostly on Twitter) took the cynical position that ideology governs much of people's stances on policy positions, that this is inevitable, and that we should just accept it. Ozimek said no, economists aren't as ideological as Roberts thinks, even commentators in the public sphere. He also said that if you find that your own positions are driven by ideology, it's a sign that maybe you should rethink how you form your positions.

More recently, the argument flared up again. Roberts declared the following:


I then challenged Russ to predict my positions on various policies. Initially I suggested that I would tell him three of my positions, and then name three other issues and ask him to predict the second three. He counter-suggested that he would merely pick a bunch of issues and predict my positions on all of them. I agreed, despite the fact that this was not as good a test of Russ' thesis.

Anyway, though, Russ did come through with the promised predictions, and posted them on Twitter. Here they are (sorry for the weird embedding of reply-tweets):









OK, here is a scorecard. Russ named 13 policy issues and predicted my positions on all of them. I will give 1 point for a correct prediction, 0 points for an incorrect one, and 0.5 points if I don't really have a position or am not really sure. I will also include brief explanations of why I hold the various positions - not because I love hearing myself dispense opinions, but so I can prove that I'm being honest about what I think. Here goes:

1. ACA (Obamacare): I'm not sure. I don't really know much about health care policy. My instinct says that the most important health care problem in America is high excess cost of care, not the number of the uninsured. Obamacare does do some things to try to address the cost problem, and costs do seem to have decelerated somewhat in the last few years, but I just don't know how big of a factor Obamacare has been, or whether the cost slowdown is a permanent thing.

Score: 0.5 pts.

2. Minimum Wage Increase: I favor local experiments with $12 or $15 minimum wages but not a national minimum wage hike - at least, not until the results of the experiments have come in, which will take years. Even then, national minimum wages are generally not great because they don't take local cost differences into account. Also I think EITC dominates minimum wage in most respects, and if paid as a wage subsidy instead of a tax credit would dominate in all respects.

Score: 0 pts.

3. 2009 Stimulus: Yes, probably a good idea. The temporary tax credits didn't do a whole lot, but support for state spending probably did do substantial good. And the stimulus included a substantial amount of money to shore up our badly underfunded infrastructure. Moreover, the deficit (and spending as a percent of GDP) has since come down to normal levels, quieting people's worries that the stimulus was a cover for permanent increases in spending and/or deficits.

Score: 1 pt.

4. Bernanke: Yes, Bernanke did a good job. Monetary policy was probably a factor in averting a Second Great Depression.

Score: 1 pt.

5. Bailouts: Probably something like that was necessary. But I think bailouts were handled badly in the heat of the moment; should have been much harder on management of big banks, to avoid future moral hazard. Still, long-term net costs to the government of most of the bailouts (with the exceptions of AIG and GM) were zero. So I'll give Russ the point.

Score: 1 pt.

6. Higher Taxes on the Rich: I don't have a moral problem with raising taxes on the rich, and I doubt the efficiency cost would be that high (rich people aren't really working to consume). However, I am very pessimistic about our chances of actually getting the money from the rich people, who are very good at avoiding taxes. Taxes on the rich used to be much higher, but the share of tax revenue as a percent of GDP was about the same. I do, however, think a higher inheritance tax would be a great idea. Not only would it tax unproductive "trust fund babies", but it would also probably raise the happiness of many rich people themselves in the long run. I think most rich people - or at least, most "self-made" rich people - don't realize how much their kids will be spoiled by large inheritances. So inheritance taxes can help save rich people from their own mistakes!

Score: 0.5 pts.

7. CFPB: Seems like it has been doing good so far, though too early to tell whether it will remain effective in the long run.

Score: 1 pt.

8. Unemployment Insurance Extension: No. We're way past the recession. Unemployment insurance is an automatic stabilizer, but it does discourage work. And the more work gets discouraged, the more people's skills and resumes and work ethic decays, and the more danger they are in of falling into the ranks of the long-term unemployed.

Score: 0 pts.

9. School Vouchers: My God, what a terrible idea. Privatized education just fails, fails, fails whenever it's tried. History is clear: It does not work. Vouchers are also a form of faux-privatization, where the government pays the bills but doesn't administer the service. That is a clear and unequivocal recipe for ineptitude, waste, fraud, corruption, and inefficiency. Russ is totally right about my position on this one.

Score: 1 pt.

10. More Govt. Funding of Education: Not sure. Don't know how effective this is. It would probably depend crucially on how the money was spent, though I don't know enough to know what the "good" way is.

Score: 0.5 pts.

11. Fannie & Freddie: Bad. These agencies seem like yet another example of faux-privatization. Government provides the funding (in this case, in the form of a guarantee), but doesn't do the administration, leading to bad incentives. Also, I think we incentivize homeownership way too much in this country.

Score: 0 pts.

12. Stricter Gun Control: Probably not. I grew up in small(ish)-town Texas, where tons of people had guns and there weren't any shootings that I ever heard of (though probably some accidents). Canada has relatively high gun ownership and very little crime, including few mass shootings. Brazil has a small fraction of the gun ownership we have, and much higher crime. Meanwhile, we've had a huge drop in crime in the last two decades with no real increase in gun control. Let's try to replicate that success before we start disarming the populace. I will admit that my stance on this has wavered recently, in light of the rash of mass shootings, but I still don't think gun control is likely to have a huge effect. A much, much more important policy for reducing gun death would be to end the War on Drugs.

Score: 0 pts.

13. Trade and Immigration: Russ is right. I'm basically pro-trade and immigration, but not for open borders. I'm definitely more skeptical of free trade than the average economist - I think industrial policy can be useful for developing countries, and I think that trade with countries that manipulate their currencies can sometimes be self-defeating. I also think that international capital flows can be destabilizing and can reduce productivity in some countries. But I will still give Russ the full point.

Score: 1 pt.


Total score: 7.5 out of 13


That is slightly better than random chance. But remember, Russ follows me on Twitter, which gives him an advantage. Also, he was able to choose the issues, which gives him a number of additional advantages - he can choose positions on which a substantial majority of Americans agree, he can select several issues correlated to those on which he is most sure about my position, etc. Given this, I don't think Russ was able to predict my positions that well.

The only obvious cluster of predictive success was on policies relating to the financial crisis. Russ correctly predicted my positions on Bernanke, the bailouts, and the CFPB.

I think this exercise shows a number of different "failure modes" of attempting to model people's policy positions based on an assessment of their ideology. For example:

1. You may fail to assess people's ideology correctly. Russ probably didn't expect that I'd intrinsically value the personal liberty of owning guns. He also probably thought I would be more eager to tax the rich simply in order to reduce inequality (regardless of its efficacy).

2. Your model of ideologies may have errors. Russ probably assumed I'd have ideological reasons to support Fannie and Freddie, because he thinks I'm a liberal, and liberals support Fannie and Freddie. But I'm not sure this is true - I've never seen liberals defend those agencies. Maybe some have, but it doesn't seem to be a pillar of liberal ideology.

3. No model of ideology is perfect. "Liberal" is a name given to a cluster of ideas, but few people precisely fit that cluster. Most people have at least one or two positions that don't toe the ideological or party line. Each individual's ideology is complex, and the standard clusters, like "liberal" and "libertarian", are only approximate models. Russ probably didn't guess that my values would be "liberal" on the CFPB, "libertarian" on gun control, etc. Even I don't know what to call myself, ideologically.

4. People disagree on the facts, not just on values. In general, people with heterogeneous priors about the state of the world will fail to reach agreement even after seeing all of the same evidence. And when people form their policy positions, they consider efficacy of policies, not just whether the intended effect would be a good thing. Russ probably didn't bet that I would be pessimistic about the efficacy of taxing the rich, the usefulness of the ACA's tax credits, or the effectiveness of gun control. He also probably underestimated my uncertainty about the effect of Obamacare on health costs, the usefulness of education spending, and the employment effects of minimum wage hikes.

So anyway, this was a fun exercise, and thanks to Russ for taking the time to do it. I'm not sure how it really relates to the original Roberts-Ozimek debate, but it was interesting nonetheless.


Updates

A few people have suggested I was too hard on Russ in my scoring. I gave him 0 points on minimum wage, despite the fact that I like the idea of conducting natural experiments with local minimum wages. And I gave him only 0.5 points on taxing the rich, despite the fact that I favor a higher inheritance tax.

Well, maybe; it's hard to score precisely. Some things are closer to 0.7 or 0.3 than 0.5. I did the best I could. On minimum wages, my opposition to a national minimum wage, and my belief that EITC is just better, made me give it 0 instead of 0.5. In reality it's more like 0.2, rounded down. On taxes-on-the-rich, I gave 0.5, because it really depends on what we use the revenue for. If it's for inefficient subsidies or boondoggles like the F-35, I say *cut* overall taxes on the rich, while shifting from income to inheritance taxes. I don't want to raise taxes on the rich just to "soak the rich" and stamp out inequality, as many do. So I don't think this deserves more than a 0.5. 0.6 at most.

Then there were a couple where I rounded *toward* Russ' prediction. For example, on bailouts, I gave him 1 point, even though I think the bailouts were not executed well and created moral hazard. So that's really more like 0.8, rounded up. And on the stimulus, I think about half of it went to utterly useless (but not particularly harmful) tax credits. So that's more like 0.8 or 0.9, rounded up. My skepticism about the pro-trade consensus probably makes that a 0.9 as well, rounded up.

So overall I think I was fair, and my inevitable roundings came out a wash. Plus, this isn't a scientific test, so changing to 7/13 or 8/13 wouldn't change the basic message, which is about how "ideology cluster" models can fail.

Saturday, 24 October 2015

How China got rich


I do not understand this Tyler Cowen post about Chinese catch-up growth:
It seems obvious to many people that Chinese growth is Solow-like catch-up growth, as the country was applying already-introduced technologies to its development. 
But how many other economies have grown at about ten percent for so long?  Was there not a secret ingredient added to the mix? 
Increasing returns to scale?...Something about Communist Party governance which enabled the corruption to be channeled productively into building more infrastructure rather than holding up progress?  Tiger Mom parenting combined with a relatively meritocratic exam system?... 
More radically, is there some “natural,” culture-neutral rate at which innovations trickle down from the world leaders to the poorer countries?  The diversity of growth rates would seem to indicate not.  Is each country then not innovating — with varying degrees of success — by building its culture-specific net for catching and transmitting global innovations throughout the nation?
I don't know about Tiger Mom parenting, effectively channeled corruption, or "culture-specific nets", whatever those are. I do know, however, that Solow catch-up growth is not about TFP increase or the diffusion of innovation!

There are basically two kinds of catch-up growth. The first is where you cheaply copy innovations from countries at the technological frontier. That's what Tyler is talking about. But the second, Solow catch-up growth, is far simpler - it's just about capital accumulation.

Countries don't start out with capital - they have to build it. So they save some of their production each year and use it to build productive capital (or trade it to other countries for capital). They do this until they have so much capital that they hit the point of diminishing returns, and depreciation starts to get so costly that it doesn't make sense to build any more capital (per worker).

Really simple. Save money, build capital. And that's exactly what China has been doing. Here's a graph from a Federal Reserve Board discussion paper from 2013:



A very smooth exponential increase in the capital-to-labor ratio.

Now of course, in the Solow model, that red line should flatten out and turn into an S-curve eventually, as the K/L ratio reaches the steady state. That day of flattening will be delayed by productivity improvements - i.e., by the other kind of catch-up growth (plus any original innovation China does along the way).

But a lot of Chinese catch-up growth - about two-thirds, according to a standard decomposition - looks just like the classic save-money-and-build-capital thing. China has many more roads, many more railroads, many more cars, many more trucks, many more buildings, many more machine tools, and many more computers per person than it did in 1980 or 2000.

We don't need Tiger moms, culture-specific nets, or increasing returns to scale to explain that.

In fact, though China's growth looks more productivity-driven than some other Asian economies, It is probably less productivity-driven than Japan's catch-up was. If you want to look for Asian countries with cultural secret sauces, I'd start with Japan instead of China. Remember, when we talk about China, we're talking about a country whose per capita GDP is still only about a quarter of the countries at the frontier. And it's not yet clear how rich China will get before its growth slows dramatically.

The question of how technology diffusion happens is, of course, one of the great unsolved and under-studied mysteries of economics.


Update: This paper seems relevant.