Why you can't trust journalism
Everyone wants one thing: your clicks (and retweets, and likes, and citations). Most writers sincerely want the truth too. Sadly the two are not always compatible. – Chris Blattman
If you’re a public-health nerd, you’re almost certainly aware of the Worm Wars. If you’re a media nerd, you’re almost certainly aware of the Nail Wars. If you haven’t heard of either, that’s fine. But if you compare the two wars, which are similar in many ways, it’s hard to come away feeling good about journalism.
Don’t worry: I’m not going to talk about deworming, and I’m not going to talk about the labor practices of New York City nail salons. But these controversies present a great opportunity to look at how we discover what is true. The lesson, if you compare the two wars with each other, is that the truth, insofar as it even exists, is always hard to find – but that it’s particularly hard to find in journalism.
The most impressive achievement of any publication, in science or journalism, is that it changes people’s minds on a certain subject. And both the Worm Wars and the Nail Wars are based around groundbreaking blockbusters which did just that. In the case of the Worm Wars, the publication in question was a paper by Edward Miguel and Michael Kremer about intestinal helminths; in the case of the Nail Wars, it was an investigation by Sarah Maslin Nir into nail salons. Both were published by highly prestigious publications: Econometrica and the New York Times, respectively. And both have recently been called into question. The International Journal of Epidemiology published a paper calling the deworming study into question; the New York Review of Books published an article calling the NYT story “demonstrably misleading”. Cue Wars.
The best article about the Worm Wars came from the great science journalist Ben Goldacre, who immediately saw the bigger picture. The original paper from Miguel and Kramer was – is – “an excellent piece of research”, he says. But all research benefits from close study and painstaking attempts to replicate findings. And reanalyzed research is almost impossible to find, in any field.
That makes little sense, on its face. If you reanalyze an existing dataset, the cost of doing so is a tiny fraction of the cost of the original research, while the scientific value of doing so is almost as great as that created by the original research.
There’s an obvious media analogy here. In media, there are people doing original journalism, and then there are lots of other people who are curating and contextualizing and aggregating and linking and rewriting and explaining and generally doing stuff which is parasitical on the original journalism. Both are important, although some people think that there are too many of the latter genus of journalists, compared to not enough of the former.
Well, that’s not a problem in science. In science, everybody seems to be doing original research, and there aren’t nearly enough people going back and re-examining that original research, or trying to replicate it, or anything like that.
Goldacre’s great mission in life is to get much more original research out into the open, to enable much more of the kind of reanalyzing and remixing that we now take for granted in the journalism world. It’s a noble mission, and he’s finding real success. If you’re a scientist who refuses to open up your dataset and your detailed methodology, people increasingly start looking at you funny, because that attitude is deeply at odds with the scientific method. If you want to find the truth, you need multiple people all looking critically at the same data, and having an open and transparent debate about how to interpret it.
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