Roles of scientists

Partly motivated, perhaps, by frequent exposure to Hurrellean lists, I have been thinking about elements of the thesis in categorical terms. My head, therefore, is swimming with Venn Diagrams. Today’s ponderings have been about the roles played by scientists. I have come up with three headings:

  1. Investigative
  2. Deliberative
  3. Regulatory

The first is their traditionally conceived role, with the latter two serving as necessary modulating adjuncts.

Investigative

This is your standard ‘scientist peering down a microscope / examining RADAR images / performing Fourier Transforms‘ role. Within it, there are components related to discovery and components related to refining existing hypotheses. This is true both when science is behaving as evolutionary gradualists would predict (slowly making LEDs brighter and more power efficient) and during periods of punctuated equilibrium (think of the development of quantum theory, explaining those LEDs, and of Kuhn).

When it comes to the environment, important scientific behaviours mostly have to do with studying interactions. How does the combination of GHG emissions and particular emissions affect mean global temperature? How does the evaporation rate of Lake Nasser affect the marine ecosystems of the Mediterranean?

Deliberative

The difference between deliberative and regulatory is partly akin to the difference between safety and security. Safety has to do with protecting against non-malicious risks. A lightning rod is a safety device – unless you believe in a vengeful deity. Security has to do with addressing threats from active attackers. The same distinction exists when it comes to scientific integrity. Someone might make an undetected experimental error and come up with data that is incorrect; some early satellite measurements of global temperature were like this. Someone else might be in the pocket of a group with a vested interest in denying climate change, and might thus be working with an experimental agenda of muddying the waters.

The deliberative role of scientists, in an ideal community, is a mechanism for dealing with non-malicious disagreement. Experiments that are outlying can be examined and replicated, the reasons for the unexpected results identified. Theories can be developed and debated in the face of evidence.

Unlike the investigative role, which can be performed perfectly well by lone scientists in igloos on Baffin Island, counting the amount of lichen per square metre outside, this role is fundamentally social. It strikes at the important distinction between science as a set of procedures and ideals, scientists as actors who try to apply them, and the scientific community as an epistemic grouping.

On a side note: it does seem possible for a scientist to be generally strong on the investigative side, but very weak on the deliberative side. Richard Dawkins comes immediately to mind. What is wrong with his positions is much less the empirical basis of most of his claims, and much more the structures of argumentation that he tries to use to assert them. For deliberation to be a useful exercise, it cannot be entirely self-confident and closed to alternative perspectives. It is also important for it to be aggressive in terms of analysis, not in terms of attacking people – an ugly trait that Professor Dawkins has revealed more and more as his anger overwhelms his judgement.

Regulatory

I see the regulatory role as being two-fold. The first part is akin to security, as discussed above. It is the process of trying to separate the quacks from those who have genuine reasons and data behind their position. This is naturally an imperfect process, but it is something that the scientific community must engage with if it is to remain a ‘community’ in any meaningful way. A meaningless community, by contrast, would be one with ties only on the basis of common obscure knowledge or some kind of internal system of controls not based on seeking correspondence between scientific explanation and physical reality.

The other side of the regulatory role has to do with generating institutional structures. Issues like funding, the prioritization of research, and the like fall into this category. This is important, partly because it relates closely to the mechanisms by which quackery is identified. Whether or not the common historical perspective on Galileo as a correct person immersed in a structure of incorrect people is correct, it demonstrates the possibility that the mechanisms of scientific deliberation and regulation could be enforcing incorrect ideas. Avoiding this requires avoiding excess rigidity – a topic that arises frequently in the Lomborg debate, and with wide-ranging implications.

I would be especially keen to hear what any scientists reading this think of the above (real, labcoat-wearing scientists, not IR scholars with extensive statistical faith). If you don’t care to comment, perhaps you could just indicate in some unobtrusive way that there are actually a few people with scientific training who have been reading my mutterings from time to time. I know for sure about one. Naturally, non-scientists are encouraged to comment, as well.

PS. If you want an example of how ad hominem attacks are more likely to make you look stupid than correct, have a look at the latest disingenuous malarky from the Competitive Enterprise Institute. Never mind that carbon offsets have been used to offset the emissions related to An Inconvenient Truth, just look at the non-sensical progression of numbers on their little counters.

Morocco Hitch update

Remember when I mentioned hitchhiking to Morocco for charity? Here is the information page from Link Community Development, which is now accepting registrations. The actual hitch takes place at the beginning of March. For me, this is far from ideal: my thesis is due on April 22nd and taking five days off to travel to Morocco (probably longer, because I need to budget extra time to be sure of catching a flight back) may be a tad reckless. That said, I remain fairly tempted. Such opportunities do not arise often. Those not terrorized by thesis timelines are very much encouraged to consider this adventure.

The registration deadline is February 1st, with a discount for registering by the end of December. The cost is £25 for normal registration, with £5 off for early registrants. You need a team of 2-3. Somewhat controversially, it must include at least one male participant.

Imperfect correspondence

In my recent experience, people have a really terrible success rate in getting back to me. This is in cases where a specific agreement is made to exchange some kind of information, usually academically related, via email. I would hazard that I actually provide such information more than 99% of the times that I say I will, though perhaps not immediately. Based on two weeks of tracking, the rate for people who have promised me such information – ranging from notes to paper citations to club information – is a dismal figure of about 10%.

Even among people who I send an email asking again for the information they were meant to provide, the success rate has been no better than 50%. I understand that not everybody is as computationally active as I am, but it is extremely frustrating to be working in a place where almost all academic work flows through some sort of electronic channel, but people’s willingness to uphold basic commitments seems so low.

Hopefully, those rates will pick up a bit with regard to the Reading conference. Some of the things people mentioned sounded very useful and interesting indeed.

Chemistry and cooking: solvents

Oxford Covered Market

Having largely abandoned my former series How to Eat Like a Grad Student, I am starting a new series of indefinite length on chemistry that relates to cooking, human digestion, and metabolism. This is sometimes called molecular gastronomy. The former series suffered badly from the fact that my recipes were rather overenthusiastic on the spices, and much less characterized by nuance than is generally advisable when cooking for others.

Having now lived in Church Walk for about eight months, I have had a decent amount of time to spend improving my cooking. Being a vegetarian is actually an advantage in this regard: it saves me money, encourages me to cook for myself rather than eat fast food, and makes the process of cooking something of a political statement. As such, I devote more effort to it.

Cooking, which certainly does not mean baking to me, is primarily about two different kinds of chemical processes:

  1. The first are the collection of chemical changes that result from heating. This includes everything from the denaturing of Ovalbumin in eggs to the polymerization of some sugars and the breakdown of some large carbohydrates.
  2. The other major category of chemical processes has to with solvents.

Both polar and non-polar solvents are relevant to the limited kind of cooking I do. Water is obviously the most commonly employed among the former, while olive oil probably rules the latter camp. Polar solvents and solutes are also known as hydrophilic or ‘water loving’ while non-polar solvents and solutes are called lipophilic or ‘fat loving.’

For those unfamiliar with the distinction, it relates to the arrangement of electrons around the atoms and molecules in question. There are two broad kinds of arrangements. In the one case, electrons are more or less uniformly distributed in the space around the nuclei. Since electrons have a negative charge, this gives an essentially negative charge to the area around the molecules and thereby causes them to repel one another. Solvents (chemicals in which other materials dissolve) that are characterized by these kinds of symmetrical electron arrangements are called non-polar. In cooking, these are usually fats.

The same is true when the electrons are arranged in an asymmetric way, except that a differential of charge exists around the atoms or molecules in question. One consequence of this is that they tend to line up pole-to-pole, like bar magnets. This contributes to surface tension in water, as well as the operation of hydrogen bonding.

Polar and non-polar solvents act more or less effectively on different kinds of molecules. Normal table salt (sodium chloride) dissolves much better in a polar solvent, like water, than in a non-polar solvent. Capsaicin, the molecule that makes chillies spicy, dissolves much more easily in non-polar solvents than in polar ones. That is why it is easy to make spices flavourful by heating them in oil. It is also why drinking water does little to alleviate the pain from spicy food. Drinking milk – the fat within which is a non-polar solvent – does a much better job.

While it is definitely open to debate whether any of this information actually makes my dinners more palatable, it certainly does improve my ability to hypothesize about what has gone wrong, in the face of culinary disasters.

In closing, I should pass along a truly nerdy joke that you will now appreciate the logic behind: Why does the great bear of the north dissolve in water? Because it’s polar.

An example of the unexpected

An unusual experience for a Saturday night is to spend several hours discussing your thesis, over dinner, with someone who you just met at a party. In particular, the matter of whether some sort of quantitative analysis – such as survey data – could be included was discussed at considerable length. Also debated were the history of the environmental movement from the middle of the last century to now and the role of coffee in academic research.

An even more unusual experience is waking up late on Sunday and realizing that the entire experience before had been a dream. How did I get the rollerblades used to climb the massive hill from the unknown college where the party was happening to the residential complex? And didn’t the person with whom I was conversing look a lot like the pharmaceutical company employee who I met on the train back from Reading?

Three Kings

Tonight, I watched Kai’s copy of the film Three Kings. I remember the advertisements portraying it as some sort of comedy; at best, it is a pretty dark satire. The point it makes indirectly and well is that the on-the-ground realities of warfare can be starkly different from the press conference versions generally presented to us.

The odd thing about the film is the way in which it plays with your sympathies: there is certainly some for the reservists (part time baggage handlers, those who never finished high school, etc). There is plenty for the general populace of Iraq. Saddam and the first President Bush are only ever in the background, each presenting as truth things that have nothing to do with the immediate reality of the film: Saddam has his smiling portraits everywhere, Bush provided the printed sheets or orders the American soldiers wave at Iraqi troops and civilians from time to time.

While the film is, in many ways, unrealistic it manages to convey a truthful message about human greed and brutality. It becomes harder to hold liberal values when the reality of how imperfectly that are applied in many circumstances is revealed.

Ban Ki-Moon and the UN

Ivy and gate, Exeter College, Oxford

Happy Birthday Meaghan Beattie

As of today, the United Nations has a new Secretary-General Elect: Ban Ki-moon, a former South Korean diplomat. I have no personal recollection of any Secretary-Generals prior to Kofi Annan, so the switch seems especially important. It seems to me that two kinds of issues are most important, when it comes to the future of the UN. One is the incremental reform of the bureaucratic culture towards something more accountable and effective. Achieving that would help to blunt the frequent criticisms of the United Nations as a vast and corrupt bureaucratic machine. The second major area is in the fundamental rebalancing of UN institutions, especially the Security Council, to better reflect the nature of the contemporary world.

From what little I know of Mr. Ban, he seems better suited to the first task than to the second. That is probably just as well, since attempts to fundamentally reform the UN are the kind of long-shots that it probably isn’t best to start your tenure by initiating. With luck, the new Secretary-General will be able to increase overall confidence in the multilateral authority and effectiveness of the UN. Doubtless, as the world continues to develop during his tenure, Mr. Ban will find that he needs as much of each of those things as possible.

[Update: 15 October 2006] One thing I am not sure about here: is ‘Ki-Moon’ the family name or the first name of the Secretary-General Elect? I know it is common in Asia to put the former first (ie. Kim Jong Il).

Party in two weeks

On the 28th of this month, my roommates and I will be throwing a party. My favourite thing about it is the theme, which arose during a brainstorm session in the dance room on the top floor of Lee’s flat last night. It shall be a “come as your supervisor” party. The point being to dress as your academic supervisor, as well as adopt their mannerisms and mode of speech. Especially interesting will be cases where more than one guest is emulating the same person.