The Limits of Expertise

I originally published this essay on the 18th of January, 2014 at The Scholar’s Stage. David Foster’s recent post on “credentialed experts” has prompted me to resurrect it here. I have not otherwise changed it from the original.

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Last month Tom Nichols, professor of national security affairs at the U.S. Naval War College  and a well regarded authority on Russian foreign policy and American nuclear strategy, published a thought-provoking essay on his blog titled “The Death of Expertise:”

…I wonder if we are witnessing the “death of expertise:” a Google-fueled, Wikipedia-based, blog-sodden collapse of any division between students and teachers, knowers and wonderers, or even between those of any achievement in an area and those with none at all.

By this, I do not mean the death of actual expertise, the knowledge of specific things that sets some people apart from others in various areas. There will always be doctors, lawyers, engineers, and other specialists in various fields.

Rather, what I fear has died is any acknowledgement of expertise as anything that should alter our thoughts or change the way we live. A fair number of Americans now seem to reject the notion that one person is more likely to be right about something, due to education, experience, or other attributes of achievement, than any other.

Indeed, to a certain segment of the American public, the idea that one person knows more than another person is an appalling thought, and perhaps even a not-too-subtle attempt to put down one’s fellow citizen. It’s certainly thought to be rude: to judge from social media and op-eds, the claim of expertise — and especially any claim that expertise should guide the outcome of a disagreement — is now considered by many people to be worse than a direct personal insult.

This is a very bad thing. Yes, it’s true that experts can make mistakes, as disasters from thalidomide to the Challenger explosion tragically remind us. But mostly, experts have a pretty good batting average compared to laymen: doctors, whatever their errors, seem to do better with most illnesses than faith healers or your Aunt Ginny and her special chicken gut poultice. To reject the notion of expertise, and to replace it with a sanctimonious insistence that every person has a right to his or her own opinion, is just plain silly.
(emphasis added) [1]

I encourage visitors to the Stage to read Dr. Nichol’s entire piece. It was prompted by what has become a common experience every time he (or fellow UNWC professor and former NSA employee John Schindler) decides to publish a new essay or speak publicly about a pressing issue of the day. Soon after his work is published a flood of acrimonious tweets and e-mails follow, declaring that he does not really understand how American intelligence agencies, the Kremlin, or the Obama administration actually work

Most of these responses are misinformed. Many are simply rude and mean. They are not an impressive example of what laymen commentators can add to America’s political discourse. Dr. Nichols suggests four rules of thumb for engaged citizens that he believes would improve matters:

1.The expert isn’t always right.

2. But an expert is far more likely to be right than you are.

3. Your political opinions have value in terms of what you want to see happen, how you view justice and right. Your political analysis as a layman has far less value, and probably isn’t — indeed, almost certainly isn’t — as good as you think it is.

4. On a question of factual interpretation or evaluation, the expert’s view is likely to be better-informed than yours. At that point, you’re best served by listening, not carping and arguing. [2]

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The trouble with this advice is that there are plenty of perfectly rational reasons to distrust those with political expertise.

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Global Warming and Cooling.

I have been frustrated by the antics of the AGW alarmists. Scientific American, for example, has lost whatever reputation it once had for objective science. (pdf) In an another example, the actions of Michael Mann should make for an interesting discovery in his suit against Mark Steyn.

Today, I find a nice discussion of global warming and cooling over the past epoch. The Greenland ice cores are, or should be, the gold standard of temperature measurement. For example.

Summary:
Records of past temperature, precipitation, atmospheric trace gases, and other aspects of climate and environment derived from ice cores drilled on glaciers and ice caps around the world. Parameter keywords describe what was measured in this data set. Additional summary information can be found in the abstracts of papers listed in the data set citations.

Now, to the data.

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The Drug War

My sentiments on the whole drug question have been influenced by some experience with the medical aspect of the problem. Drugs are slipping out of any control due to developments in synthetic variations of older substances that stimulate brain chemistry, sometimes in unknown ways. The traditional drugs, if we can use that term, are also slipping out of control with Mexican drug wars replacing the Columbian cartels even more violent than their predecessors.

What about marijuana ? It is widely used by the younger generation and, while I do think there are some harmful consequences, especially in potential schizophrenics, the fact is that the laws are widely ignored and do little good and much harm. First, what about the link to psychosis ?

Epidemiological studies suggest that Cannabis use during adolescence confers an increased risk for developing psychotic symptoms later in life. However, despite their interest, the epidemiological data are not conclusive, due to their heterogeneity; thus modeling the adolescent phase in animals is useful for investigating the impact of Cannabis use on deviations of adolescent brain development that might confer a vulnerability to later psychotic disorders. Although scant, preclinical data seem to support the presence of impaired social behaviors, cognitive and sensorimotor gating deficits as well as psychotic-like signs in adult rodents after adolescent cannabinoid exposure, clearly suggesting that this exposure may trigger a complex behavioral phenotype closely resembling a schizophrenia-like disorder. Similar treatments performed at adulthood were not able to produce such phenotype, thus pointing to a vulnerability of the adolescent brain towards cannabinoid exposure.

This suggests that adult use may be less harmful.

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Orionid Meteor Shower Photos

The night of October 20-21, 2012 was a good time to see Orionid meteors, which are bits of Halley’s Comet that hit the Earth’s atmosphere every October and appear to originate from the constellation Orion. With Jay Manifold’s expert advice and a star map that he emailed to me, I drove to the darkest convenient place and spent a few hours taking pictures.

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Supermoon!

This coming Sunday’s full moon will be a supermoon, a full moon that coincides with the moon’s closest passage of the year to the Earth. The moon will appear to be a bit bigger in the sky than it does at other times. Might be worth a look. Also could be a good time to go surfing.

(I usually need to shave at least two or three times on a supermoon day but maybe that’s just me. If you have similar issues you might find this to be helpful, or in extreme cases one of these.)

The so-called super moon -- a full moon on the date of the moon's closest annual approach to Earth -- as seen from the observation tower in the Shark Valley section of Everglades National Park, Florida on May 5, 2012. (©2012 Jonathan Gewirtz/jonathangewirtz.com)

Last year.