FOLLOW-UP: Personal, Corporate, and In-Between Fraud

This is a follow-up to my post from last month about the VW emissions cheating scandal and the case of the arrest of the "clock kid" Ahmed Mohamed.

Regarding the VW emissions cheating scandal, VW executives blamed (link from AP, Reuters, NBC News) "a couple of software engineers". Given how the cheat was pretty much impossible without a collaboration between many engineers of different kinds (mechanical, software, electrical, et cetera), all I can say is the following: HAHAHAHAHAHAHA!

Regarding the case of Ahmed Mohamed, it turns out that he and his family are moving (link from Jessica Contrera, Washington Post) to Qatar, and that this decision was supposedly made less than 24 hours after meeting President Obama in the White House. In my previous post, I pretty much unconditionally defended him against accusations of fraudulent behavior. I still don't believe that he personally would have brought the clock in just to incite the response from the school and police that transpired, because for one, that would require a massive conspiracy, and for another, that absolves the school and police of responsibility for their actions. That said, I am now less sure of his family's actions and motives following the arrest and its initial reporting. Clearly they took advantage of the massive publicity, and while I'm certainly not a fan of that sort of exploitation of publicity, I was hoping that would be the end of the story. Yet now, I can't believe that a Sudanese immigrant family, where the father has run for the presidency of Sudan before, would within the span of 24 hours decide to move to Qatar, unless they already had high-level connections there. My guess now is that while this story would have likely been widely shared regardless of the family's behavior, a lot of the publicity was probably due to the family's influence itself, and they were able to use that to move out to Qatar (and use the story to get the Qatar Foundation to provide Ahmed a scholarship to sweeten the deal). It probably wasn't because of Ahmed's inability to go back to school in his district, because there have been plenty of other cases of kids who have been in situations where they can't go back to school in their home districts because of similar high-profile incidents. In such cases, the family usually moves to another district within the state, another state, or maybe their home country if they immigrated here, as opposed to a totally different country. Anyway, I still do wish Ahmed the best in his studies of engineering, but I now feel at least partially duped in some way by this whole turn of events, and hope that this story finally dies once the family moves out of the country.

Personal, Corporate, and In-Between Fraud

I realize that the two (really, 1.5) main topics of this post are already somewhat old news, having happened last week and having not really persisted into the news cycle of this week. That said, I didn't have a good opportunity to write this last week, and the end of the month is coming (and I didn't have any other posts this month), so I figured now is the best time for me to write this. Follow the jump to see more.

Economics and Empiricism

I know it has been a while since I've posted anything here. That's because I had been busy until the end of last month with studying for the Physics GRE. Since then, my life has been dominated by a combination of classes, my UROP, and graduate school applications. That also means that for the next several weeks, posts here will once again be fairly infrequent. That said, I read an article today in the New York Times by economist Raj Chetty, who would like to convince readers that economics is a science like any of the natural sciences. Having seen such arguments poorly presented in my economics textbooks, I figured this would make for a nice quick rant. But then as I thought about it more, I realized that this issue is actually a lot more subtle than I originally imagined.

As a physics student, I don't know if I can ever shake the gut feeling that economics somehow will always be "mushier" in some way compared to the natural sciences. But I need to make sure that there is solid grounding for that feeling, or else I should be casting away that feeling as well. So why do I feel that economics is "mushier"?

Let's take the following sentence: "I’m troubled by the sense among skeptics that disagreements about the answers to certain questions suggest that economics is a confused discipline, a fake science whose findings cannot be a useful basis for making policy decisions." I'm sure there are people who believe that having multiple opinions and interpretations of even raw empirical data alone makes economics untrustworthy. I'm sure this thought may have crossed my mind at various points as well, but I realize this isn't why I feel economics is mushy. As I think about, I realize for example that after electroweak symmetry breaking (i.e. the reason why electromagnetic and weak interactions become identical at certain energy scales, but why at the scales we usually observe the photon is massless while the W and Z bosons are massive) was discovered, a few different explanations were posited for the underlying cause. One was the Higgs boson, and the other was technicolor. After the discoveries of the past two years, of course, it is safe to say the Higgs boson is a much more likely candidate than technicolor, but there was a decades-long gap between the theory and experiment. Clearly this is an instance in physics where before further experiments could be performed, two competing explanations were jockeying for attention in the physics community. So I can't say that economics is mushy because there are disagreements among economists in their interpretations and explanations of the same sets of data. So why do I feel that it is mushy?

It's likely because of what happened with Reinhart/Rogoff. From what I understand, Reinhart and Rogoff published an influential paper which posited that a country whose debt-to-GDP ratio pushes above 90% will quickly be plunged from economic growth into a recession (or worse if the starting conditions are worse). As it turns out, a graduate student found an error in the calculations that led to this conclusion and showed that in fact no such debt-to-GDP threshold ratio causing a sharp reversal of macroeconomic fortunes exists. As far as I can tell, rather than backing down, Reinhart and Rogoff have been pushing their findings harder than ever. So I may think economics is mushy because there seems to be little drive at the upper echelons to maintain scientific skepticism and admit errors as they happen, especially when it comes to macroeconomics. Granted, it took a long time after the first cosmic microwave background measurements came in for the steady-state theory to be cast out of cosmology, but it seems like especially in macroeconomics, this is a more prevalent problem than in the natural sciences.

In fact, the author of the article briefly touches on this, but proceeds to pretend that this is not the reason why people don't believe that economics is a science. Yes, the article does go through in pretty good detail what advances have been made in empirical microeconomics and econometrics that should earn economics the respect given to other sciences. And after having taken the class 14.03 — Microeconomic Theory and Public Policy and having learned there a little about empirical microeconomics and econometrics, I'm actually rather inclined to agree (as I actually learned some of the details of some of the examples in this article).

The issue is that when most news articles quote economists, it's usually in the context of macroeconomics, as macroeconomic activity will by definition affect the largest segment of the readership, as opposed to microeconomic moves taken by certain firms, labor groups, or municipalities. Macroeconomics is a very young field with not a whole lot of data as yet. Additionally, there is a lot of disagreement among macroeconomic theorists about how to interpret macroeconomic events/trends, and too many of them are acting more for political gain than for the sake of advancing the field (see: Reinhart/Rogoff). It's really cool when the LHC performs experiments to further probe the Higgs boson (i.e. science), but honestly, people will care a lot more if their federal income taxes change (i.e. macroeconomics), and such a change cannot be effected in a controlled environment (in relative contrast to the Higgs boson experiments). Regarding that last point, macroeconomic models are too unreliable compared to scientific models of macroscopic systems that economists would love to emulate, because they very frequently fail to predict the outcomes of certain economic events or enacted policies. So it's the combination of the fact that macroeconomics is unreliable and that its scholars have the very real power to personally gain from their models being correct potentially at the expense of other people's livelihoods (where I've emphasized that last point in contrast to natural sciences) that makes myself want to push economics away from the natural sciences.

But this isn't fair to microeconomics. So what's the solution? I would personally split microeconomics and macroeconomics much more. In any case, the author says that more and more research that even affects macroeconomic decisions is coming from empirical microeconomics. In that case, I would say that news outlets should devote more space to highlighting empirical research done in microeconomics that clearly affects people's lives, such as those highlighted in the article. And maybe farther in the future, all economics will basically be microeconomics, and macroeconomics will become what classical thermodynamics has become in relation to statistical mechanics: a bulk limit that is only obtainable under very specific conditions.

HIGGS!

Today is Independence Day for the United States of America. But more importantly, today was the day that the Large Hadron Collider announced the discovery(ish, because more experiments have to be done to verify its other properties) of the Higgs boson!
This is HUGE! It's an amazing vindication of the Standard Model of particle physics as it stands today, and it should be the last nail in the coffin of the old trope I have heard frequently that there is no new interesting research to be done in physics. So with that in mind, happy Independence Day, but more importantly, HAPPY HIGGS DAY!!!