Solving wicked problems

I had never run across the concept of a wicked problem before yesterday, but I’m finding it to be a fascinating concept. A wicked problem has no single solution and is intricate, difficult to delimit or even define, and often inextricably linked to other problems. It’s about as different as can be from the kind of puzzle or math problem that has a single answer that can be reached by the careful application of reasoning; a wicked problem often requires an iterative approach to a solution, and a flexibility that recognizes the shifting nature of the problem. Examples of some big wicked problems include climate change, terrorism, dwindling oil supplies, and the US health care system. Wicked problems that are smaller in scope but equally baffling plague many companies and other institutions, judging by the amount of literature there is on the subject of managing this type of situation.

A lot of the information I’ve found about tackling wicked problems involves communication strategies for helping groups of people work together to understand the problem and come up with approaches to a solution (e.g., a couple of the methods are called Dialogue Mapping and Conversational Modeling). That makes a recent research project at Sandia National Laboratories particularly interesting. In this real-life study of a genuine problem that concerned them, Sandia employees and interns were asked to brainstorm ideas about the problem, either alone or in groups that pooled their ideas by contributing anonymously to a web site. Those who worked alone had no access to the ideas of their co-workers.

When you think about brainstorming approaches to a complex problem, you might think that the more brains you have, the better the ideas that will be generated (unless perhaps you’ve had to sit through too many fruitless or overlong meetings). However, in this case the ideas generated by the people who worked alone were rated by the organizers of the study as being better in terms of originality, feasibility, and effectiveness. One of the organizers pointed out that if online meetings are cheaper and shorter than face-to-face meetings, having people work alone might be even more cost- and time-efficient. (Not to mention that it gives the introverts like me a big break.) There’s a caveat toward the end of the press release to the effect that in some circumstances online or face-to-face interaction is still going to be needed. Still, this is a very interesting result, especially since it comes from a situation where people were dealing with something that presumably really mattered to them in their working lives.

E.O. Wilson on science and religion

This essay by biologist E.O. Wilson, published on the New Scientist site, is an excerpt from his afterword to an edition of four books by Darwin that was published a couple of years ago. The essay describes three viewpoints on humans and their place in the universe: a religious view that sees us as created by a deity; political behaviorism, which sees us as more or less perfectible blank slates that can be shaped to the culture’s needs; and scientific humanism, which is the bedrock of my own worldview. Scientific humanism sees us as products of evolution, and scientific humanism alone really sees us as what I call thinking meat—intelligent animals whose nature is a unique and complicated blend of animal necessity and mental activity. Wilson goes on to predict that religion and scientific humanism are likely to go on butting heads, finding neither agreement nor accommodation, because the differences between the two are increasing as we learn more and more about biology.

He says that there’s something about religion that “divides people and amplifies societal conflict”. This brings to mind something that a friend of mine pointed out once. Science tends to hone in on an answer to a particular question; alternatives are pared away by peer-reviewed experimentation and replication of results. At its best, scientific discoveries can not only narrow down the possible answers to a question, but unite disparate facts and observations by finding the underlying order. Religion, on the other hand, is a much more fragmented thing. I doubt there ever was a single religion or deity that everyone on the planet knew, and even religions that have dominated huge segments of the Earth’s population have been characterized by sects and divisions. I’m not sure why this is so, but I think it has to do with the purposes of religion and science. Religion is much more shaped to the needs of a particular community or mindset, whereas science is tuned to the objective facts to be observed in the world. Wilson points out that religion harms as well as benefits humankind, and closes his essay by wondering if scientific humanism might be able to provide the benefits without the social costs of religion. I guess first we have to wait and see if it ever becomes more than a minority viewpoint, and then see how it does.

Pastafarianism

So what exactly is a religion? More specifically, does the Church of the Flying Spaghetti Monster (aka Pastafarianism) count? The CFSM grew from an amusing letter to the Kansas School Board that requested equal time in the science classroom for the views of the Pastafarians, who believe that the universe was created by the Flying Spaghetti Monster. Any scientific evidence to the contrary is merely the result of tinkering done by the FSM’s Noodly Appendage. Funny, yes, but the board at the time was considering whether to include Intelligent Design in the Kansas science curriculum, and the letter makes the serious point that if ID is taught as science, what’s to prevent any other set of non-scientific ideas from forcing its way into the classroom too?

The CFSM is now an official parody religion with its own book of scripture (The Gospel of the Flying Spaghetti Monster) and a largish cultural presence on college campuses and other hangouts of wise guys and science geeks. Or is it a real religion? This story from Live Science talks about the coverage of the CFSM at the annual meeting of the American Academy of Religion. A panel will discuss Pastafarianism and its connection to the question of what makes a popular movement a religion. It’s a good question. Is Buddhism a religion, or Taoism? Both lack deities but focus on many of the same concerns as religions do. They’re both spiritual systems, I think, but I’m not sure if I’d call them religions. The CFSM is also in a sense concerned with what might very loosely be called spiritual matters, and it certainly shares some of the other features of religions (and it even has a deity).

It’s all tongue in cheek, so the CFSM is known to be a construct of the human imagination. I read a book years ago about an atheist who went to an Episcopalian church; as I recall, he was a little surprised to find others in the congregation who were atheists or agnostics. And I know there are people who call themselves “cultural Catholics”, who go to church for the community, the music, the traditions, but do not really believe what the church teaches about God and sin and so forth. (And certainly the drop in the size of Catholic families indicates a disconnect between official Catholic doctrine and Catholic behavior, even for those who are not cultural Catholics.) If people in mainstream religions can sometimes be fairly loose about their belief in the tenets of their religion, maybe Pastafarianism would count after all. I don’t really know how I’d define a religion, but I’m amused when I think of religious scholars addressing the question in the context of Noodly Appendages.

An evolutionary psychology take on family size

When I posted a few days ago about new books on the reading list, I said I’d have more to say about evolutionary psychology. So here’s an interview with one of the authors of Why Beautiful People Have More Daughters, a new book on evolutionary psychology by Alan S. Miller, Satoshi Kanazawa, and Stephen Hoye. I’m sure the book is entertaining and thought-provoking, but I have some doubts about its content nonetheless.

The basic idea is that our brain evolved in a different environment than the one we live in now, and that long-vanished environment has left its traces in our behavior, which is often at odds with the world we really live in. Evolutionary psychology (EP) aims to figure out the ways our current behavior has been shaped by the pressure of selection in the past. EP can offer some fascinating analyses of how we got to be the way we are, and why we do things that don’t necessarily make sense now (the reason is often that those things used to make sense).

However, it’s worth noting that another recent book about EP, Evolutionary Psychology as Maladapted Psychology by Robert C. Richardson, analyzes the explanatory power of EP and concludes that on the whole, EP doesn’t provide the kind of evidence that would be expected of arguments in other areas of evolutionary biology. I’m deeply interested in understanding how our brains and our behavior evolved, and I’m as intrigued as anyone by the kind of explanations evolutionary psychologists come up with, but a lot of the time I have to wonder how on earth they can prove their claims.

I haven’t read the Beautiful People book, but from what Satoshi Kanazawa says in this interview, it sounds like it may place a bit too much emphasis on the ways we’re “prisoner[s] to our hard-wiring”, as the interviewer puts it. This appears most glaringly to me in the two unanswered questions in EP that Kanazawa mentions at the end of the interview: Why do middle-class people in developed nations who have the resources to feed and raise larger families so often limit themselves to only two children? And why do people from big families not have small families themselves (since they have more siblings to share the load of passing genes along) and why do people from small families, or only children, have many children themselves (since they must make sure to get their parents’ genes into the next generation)?

Maybe there’s something I’m missing, but these questions seem to totally ignore cultural evolution, which is another strong force that influences our behavior. We’re more than just machines for passing along genes, and we are well able to control our behavior so that we act in the best interests of something other than blind reproduction. (In fact, some people consider that one of the most promising things about us.) Culture is of course constrained by our evolved capacities and limitations, but it does have a hand in shaping our behavior.

Another thing that bugged me about this interview is Kanazawa’s explanation of the history of evolutionary psychology. It’s not just that in 1992 a group of people decided to apply evolutionary ideas to human behavior; the roots of the field go back further than that (perhaps to E.O. Wilson’s book Sociobiology—maybe sociobiology and EP are not really the same thing, but they’re certainly closely relatedor to Richard Dawkins’s The Selfish Gene). I know, this is just a short interview and we can’t expect a whole lot of detail or nuance, and maybe the book is more carefully written and rigorous than the interview would lead one to expect. But I have to admit that I’m not optimistic.

Book review: Musicophilia

Musicophilia: Tales of Music and the Brain, by Oliver Sacks.
New York: Alfred A. Knopf, 2007

The latest book of essays on neuroscience by Oliver Sacks looks at various aspects of brain function as they relate to music. He focuses not just on how the brain processes and understands music but what music means to us and how it makes us who we are. I admire the compassion and humanity that always seem to fill Sacks’s writing, and this book illustrates those qualities beautifully.

Sacks often writes about people who have suffered an injury or illness or congenital condition that in some way limits their ability to live a normal life. You would think that reading a series of essays about such people would be depressing, leading as it does to a horrified realization of the fragility of our brains and the frightening possibilities for the loss of mental faculties that we rely on and that in some cases even seem to define us. Sacks has the gift of somehow making this material uplifting, of emphasizing the joys of being human even as he shows us the hazards.

Partway through this book, it’s true, I started to wonder about the strength of the thread that tied together these tales of loss and the ways they illuminate brain functions. But as I continued to read, I saw that the theme of the book was indeed strong enough to tie together the stories and make the book seem like more than the sum of its parts—and that the theme is not just music, but identity.

The book contains four sections, each covering some facet of music and the brain. The first section examines cases of music taking over the brain in one way or another: musical hallucinations, earworms (tunes that you can’t get out of your head), epilepsy that is triggered by music, and an astonishing case of a man’s life being utterly transformed by an intense passion for music that developed after he was struck by lightning. The second section looks at different aspects of musical ability, where they arise and how they vary from person to person. The stories here are not all about disabilities; Sacks also discusses people with synesthesia, a sensory blending in which input from one sense bleeds over into the perception of another. Sometimes I feel envious of synesthetes, and the associations some of them have between, for example, musical pitches or keys or timbres and colors are fascinating.

In the third section, Sacks looks at the connections between music, memory, and movement–this is where he tells the story of Clive Wearing, whose severe amnesia dissects his life into seconds-long fragments of consciousness unconnected with each other–except when he’s playing or conducting music, which provides a thread that links his moments. He also tells of people with Parkinson’s, Tourette’s, and other movement disorders, and how music can help them regain fluidity, focus, and control.

The last section makes explicit the connection between music and identity that is also explored elsewhere in the book. This was in some ways the most moving section of all for me. In fact, when I first brought the book home, I turned immediately to the essay on music and depression. As is the case throughout the book, Sacks weaves his own experiences into the stories he’s telling, and I found so much that rang true from my own experiences of depression. It feels very good to see someone else articulate something that you have felt but haven’t been able to put into words, and this chapter was full of moments like that for me.

I was particularly struck by his observation that while sad music “makes one experience pain and grief more intensely, it brings solace and consolation at the same time.” This paradox explains why listening to recordings of the Requiems by Mozart or Brahms or Fauré can make me feel so much better. When you tell someone that you’re listening to a Requiem to make yourself feel better, it can sounds like a perverse undertaking, but it does work.

The final chapter of the book is about music and dementias like Alzheimer’s. I was surprised to learn about the ways that music therapy can help people with dementia and touched by the observation that music can still reach people after most of their other connections to who they were have gone. For some reason the closing of the book called to mind some lines from a Wendell Berry poem: “Only music keeps us here, each by all the others held.”

The need to rationalize

Maybe you remember the scene from The Big Chill where one of the characters praises the importance of a good rationalization. (Can you get through a day without one?) Rationalization, the art of justifying behavior that may not really be easily justifiable, is explained as a way for us to live comfortably with our decisions even in the face of evidence that they might have been flawed.

Being aware of facts that undermine the wisdom of a decision we’ve made—noticing a house in your price range in a better location, for example, right after you’ve closed on what you thought was your dream house—gives rise to cognitive dissonance, the effects of trying to hold onto two competing ideas about what we’ve done. So we banish the evidence against our decision, and decide to be happy with what we’ve got.

The assumption has been that this is a fairly complicated cognitive process that we’re more or less aware of, but this article from the New York Times describes some recent research that indicates we share the process with very young children and capuchin monkeys. Rather than assume more complicated mental gyrations in these less mentally sophisticated thinkers, the conclusion seems to be that perhaps our own acts of rationalization are less conscious and more automatic than we realized. Incidentally, I really like the graphic at the top of the article.

End of DST, hallelujah

Those of you who know me personally have already heard my diatribes against Daylight Saving Time (DST), which luckily I have been able to avoid for the most part, until recently. I grew up mostly in Arizona, and then moved to Indiana, both of which are (or have usually been) sane enough to understand that for a given location, you get as much daylight as you get, no matter what you do, and it is up to individuals to decide how to make use of it. (A friend once described DST as being like cutting a foot off of one end of a piece of rope and tying it onto the other end, and thinking you’ve made the rope longer.)

Last year Indiana adopted DST, and this year the US as a whole extended DST, much to my irritation. The economic effects of the extension are still to be determined, but the effects on human circadian rhythms have not been very extensively studied. However, a recent European study addressed this question, examining how people’s sleep/wake cycles adjust to DST.

The conclusion was that circadian rhythms do not necessarily adapt well. People who are night owls are apt to have the most difficulty, in particular with the leap ahead by one hour in the spring. (I’m definitely a night owl and I do not at all like the onset of DST in the spring, so this made me feel a bit better. Maybe I’m not just a crank with a bee in my bonnet.) This article from Science Daily has more information. I especially like the description of the fall transition as the “release” from DST. That’s exactly what it feels like.

Altruism and war

Altruism toward community members who are not related to you, with its implications of kindness and generosity, may be intertwined in human history with hostility toward members of other communities. Researchers at the Santa Fe Institute have used game theory and computer simulations to demonstrate that under the conditions our late Pleistocene and early Holocene human ancestors probably faced, neither agression toward outsiders and generosity toward unrelated people (parochial altruism) are likely to have been viable strategies by themselves, but they could have been successful together. Each strategy is in some sense costly (benefitting others who don’t carry your genes, in the case of parochial altruism, and taking time and energy and risking death in the case of aggression toward outsiders). But if parochial altruism bound a community closely enough together that it was more likely to succeed in its attacks against outsiders, then the two strategies could work hand in hand. You can read more about the research in this press release from Science Daily.

Note that this is talking about the past, and not about conditions today. This dynamic may be alive and well in the human psyche today; to anyone who’s been on the outside of a close-knit community, this link between solidarity and hostility is not as counterintuitive as it may sound. Being in, being “one of us”, is full of benefits, but if in some way you don’t fit the mold, you can in some cases quite easily become “one of them” and be ostracized or worse. But that doesn’t mean we have to live out this dynamic over and over. Not only do we have the power to understand and change our behavior, I think we may also find it imperative to do so in order to survive, in an age of nuclear and biological weapons and global problems that urgently require us to cooperate.

Sleep deprivation and emotions

When I was younger, I could bounce back more easily from sleep deprivation; as I get older, it’s becoming harder to deal with a short night or worse yet, a series of short nights. My mind becomes muddy and my body feels sluggish. Studies have investigated the physical and cognitive effects of sleep deprivation, but not as much has been done to examine the emotional effects of sleep loss.

A recent study looked at 26 healthy volunteers, some of whom kept a normal sleep/wake schedule and some of whom had to stay awake for 35 hours. Then, while their brains were scanned with fMRI, both groups were exposed to images that started out bland and became increasingly emotionally disturbing. The sleep-deprived group showed much more activity in areas of the brain involved in processing emotions (the press release doesn’t say specifically which areas) compared to the group who slept normally. The press release also doesn’t say if the people were monitored in any other way for the strength of the emotion they were feeling (self-reporting, respiration or heart rate, etc.). (I’d be particularly interested in correlations with what people reported they were feeling.) At this point there’s no telling why this should be the case or how sleep might buffer the effects of emotional stimuli, but this is an interesting start. This press release from EurekAlert has more information.

Book review: Brain and Culture

Brain and Culture: Neurobiology, Ideology, and Social Change, by Bruce Wexler, Cambridge: MIT Press, 2006

This book explains human difficulties with change, including phenomena like the generation gap and the clash of cultures, in terms of brain development over the course of the human lifespan. This offers a fascinating perspective on some of the more difficult problems we face as a species.

The human brain, in the first two dozen years or so of life, is molded by its environment, both its physical surroundings and the cultural environment created by other brains. The first half of this book describes, with extensive supporting evidence from scientific studies, the ways in which the young brain is shaped by experience. The inputs from the environment are essential for the proper functioning of the brain, in particular with regard to perception and language.

The mature brain is very different, though. After structuring itself to mesh with its environment, the brain becomes much less plastic in adulthood, and instead of shaping itself to the input it receives, it tries instead to shape the external world to match its internal conception of what the world is about. That is, we form our ideologies in youth and then tend to perceive and interpret experiences so as to support our worldview while ignoring or discounting contradictory input.

The second half of the book discusses the evidence for this behavior and its implications. The evidence includes some of the cross-cultural studies in which Asians and Americans notice and focus on different parts of a scene, with Asians taking a more holistic view and Americans finding a prominent central focus and perceiving the rest of the scene as background. There are many other strains of evidence for the ways we interpret reality based on our mental maps.

These types of mental representation are useful, of course, and can save us a lot of time and energy. But when we find that our inner map of reality differs in some important way from the real world, we don’t like it, and we try to restore a good fit between the two. And that’s where things get interesting. Wexler discusses two examples of changes in the outside world that require great effort to adapt to: the loss of a spouse, and moving to another country. Children of immigrants typically do better in terms of learning the language and adopting the customs of the new country, as their brains are still absorbing and adapting to the world around them. Older immigrants have a much harder time of it.

One of the most painful ramifications of the way our brains work, though, is what happens when people from different cultures meet. The supporting data for this part of his argument are not as strong as for the other parts, but Wexler still makes a convincing case that conflict between cultures is often based on a struggle over whose ideology will prevail rather than a struggle over resources like land. He examines contemporary writings about the Crusades, for example, which indicate the ideological fervor (rather than lust for territory) that moved people to join these often doomed enterprises.

He traces the stages people go through when meeting a significantly different culture: ignoring the differences, then distorting them so as to interpret them in terms of the existing ideology (e.g., European explorers deciding that certain native Africans were descended from Noah’s son Ham, or Hawaiians deciding, when Captain Cook arrived, that he must be the deity Lono, rather than a human like themselves). But with prolonged contact, these efforts to incorporate the new input into existing mental structures break down, and people are apt to start trying to eliminate the distressing evidence of a contradictory worldview. Because religion is often central to a culture, it appears frequently as the chief cause of intercultural struggles.

So what is to be done about it? Contact between different cultures is much more extensive today than ever before in the history of our species, and it’s not going away any time soon (barring a widespread collapse due to global warming or a collapse in transportation due to energy shortages, in which case a much smaller human population may retreat into local enclaves that do not have much interaction with others elsewhere on the planet). Wexler discusses some of the current problems of intercultural contact, for example, the loss of languages and long-established ways of life as small groups are forced to leave their native lands, or the struggle of even larger countries to maintain their own culture against the juggernaut of American movies, music, etc.

Culture is always changing; although Wexler doesn’t address it extensively, each generation is shaped by a different environment from the one before, and the neurological processes he describes could also account for the negative reactions of generations of parents to the worlds their offspring create (the generation gap). But as difficult as those intergenerational changes are, at least there’s usually enough continuity that a culture continues to think of itself as being in some way essentially the same throughout time.

The kind of culture change that comes from outside these days can be much more disruptive and is often felt as a much more painful loss of identity and meaning. Wexler suggests the university as a model for blending cultures; people are exposed to a wide range of cultural possibilities in a relatively non-threatening atmosphere. This type of smorgasbord approach will never preserve all the world’s existing cultures and languages intact, but it does provide a more or less painless way for cultures to meet and blend without crashing into each other.

I really enjoyed reading this book and felt like I learned a lot. (It seems a bit pricey, though, which is too bad because it might keep the book from getting as wide a readership as it deserves. You might want to consider seeing if you can find it in a library near you.) It left me with some questions that I hope someone else follows up on. For example, I wonder about the power of culture to reinforce curiosity and respect for differences as a positive aspect of a group’s identity, and the limits of this approach. (I think there’s a limit to how open you can be before you start to lose your own sense of who you are. Also, some questions of material culture are not open to compromise, and some practices do not deserve respect no matter how important they may be to a culture—clitoridectomy, for example.)

Also, people differ in how open to new experiences and different ideas they are in adulthood—actually I think individuals vary depending on circumstances—and I’d be curious to know how these individual differences play into the overall situation, and whether we can identify any neurobiological differences that could account for them. Could it be that our ability to maintain a balance between preserving our own culture (including standing up for our values) and opening up to others in a peaceful and appropriate way depends on a balance in different personality types in the population?