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| Wed May 7 21:39:24 2008 Human Nature |
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| Mon Apr 28 19:00:21 2008 Metastability at Baker |
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| Thu Apr 17 20:00:52 2008 Edward Lorenz, 1917 - 2008 |
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| Wed May 7 21:39:24 2008 Human Nature Top Books on Human Nature |
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| For most of history, human nature was the domain of philosophers, theologians,
and writers of novels. It was thought to be beyond the realm of mathematics or
science, either because the soul was considered supernatural or because it was
just a hard problem.
But then I think there were two things that happened in the 20th century that opened the door to the scientific study of human nature. And now scientists and mathematicians are expanding the study of human nature, properly exploring the hard questions that had been examined but never solved by previous generations of philosophers and theologians. The first breakthrough was the publication of The Theory of Games and Economic Behavior by John von Neumann and Oskar Morgenstern. That laid the foundations for game theory. Suddenly scientists had a way to analyze and model how multiple agents could cooperate or compete in a variety of economic (ie, real-world) scenarios. The second enabler was the discovery (or more accurately, the first plausible physical description of) DNA. The double helix solved what had been a long-standing problem: how genetic information was passed down in plants and animals--basically anything living on Earth that we know of. The understanding of genetics, plus game theory, helped bring about a new field: evolutionary psychology. I think the wikipedia definition is good: "Evolutionary psychology ... is a theoretical approach to psychology that attempts to explain mental and psychological traits -- such as memory, perception, or language -- as adaptations, that is, as the functional products of natural selection..." But let's face it, that's basically the study of human nature, with the hypothesis (now well-tested) that human nature has evolved as a set of adaptations. Given this recent revolution, where a whole field of study was recently opened up to investigation, what do I (as an outsider to the field) consider the best books for the layman? Here is my list, in chronological order: 1976: The Selfish Gene by Richard Dawkins. Although not strictly about evolutionary psychology, it is the clearest book I know on a fundamental issue of evolution: genes evolved for themselves, not us. It shook up evolutionary biology at the time, and his viewpoint is still what guides practically all studies of evolution, whether biological or psychological. It is surprisingly readable even today. [As an aside, read the first review on Amazon.com. Clearly that reviewer was impacted by the implications for human nature as well! Although I think the reviewer missed the difference between science and religion, and suffered for years as a result. Evolutionary psychology has nothing to say about God or His purpose. You can believe in both.] 1992: The Third Chimpanzee by Jared Diamond. The book is subtitled "The Evolution and Future of the Human Animal." Oddly, his other books such as Guns, Germs and Steel and Collapse, seem to be more well-known. But I consider "The Third Chimpanzee" to be his best work. The chapter names alone tell you that he is addressing key human behaviors ("How we pick our mates and sex partners", "Why do we smoke, drink, and use dangerous drugs?"). And the last chapters of the book lay down the basic themes that he picks up in more detail in his later books. 1994: The Language Instinct by Steven Pinker, subtitled "How the Mind Creates Language". Although some reviewers now question his exact theories of language mechanisms, he is an excellent writer that conveys some key learnings about language development. One of the reasons this book makes the list is that it is a fun and engaging read. You start to pick up on how the mind has been built and evolved from multiple components over time, a theme that led to his next book... 1997: How the Mind Works. This book is one of the better surveys, in my mind (no pun intended). Just as readable as his "The Language Instinct", but now focused on the computational theory of the mind, rather than language specifically. A great read! Honorable Mention These are books that came to mind, but didn't make my mental list of "best" books for one reason or another. 1978: On Human Nature by Edward O. Wilson. No listing of books on human nature would be complete without it! Although I found it a good read, I didn't find it as groundbreaking idea-wise as the other books on the list, or as memorable. But it deserves mention since many other readers consider it the definitive work on the subject. 1995: An Anthropologist on Mars by Oliver Sacks. (Another good title would be The Man Who Mistook His Wife for a Hat, 1985). Although not about evolutionary psychology, Oliver Sacks has studied the brain for a long time. If you have spent any time debugging computer programs, attempting to figure out what is broken inside by observing external behavior, you will be powerfully impacted by Sacks' description of how he had to debug the neurological conditions of his patients. Great works, and they don't make the list only because they are slightly off-topic. After reading "An Anthropologist on Mars", I was struck by some of the similarities between myself and the title character, who was autistic but functional (and successful!). I wondered if I was autistic! So I took some online autism tests like this one and quickly reassured myself that no, I am not autistic. Most Importantly... Most importantly, keep a sense of perspective. As far as evolutionary psychology has taken us, and as far as it has to go, I'm surprised at how we keep coming back to the basics. And for that, you can't beat Voltaire's Candide. It is short, and remarkably relevant after almost 250 years (especially if you consider the context in which it was written). If you could only read one book on human nature, this is probably it. Comments |
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| Mon Apr 28 19:00:21 2008 Metastability at Baker Cool avalanche patterns. |
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| I spent last Saturday on the slopes at
Mount Baker. A beautiful day! I don't think there was a single cloud in the sky. I ended up with
a mild sunburn on my face.
Still, it was worth it. It was my last day for the season (Baker shut down on Sunday). I spent most of my time on Chair 8, a perennial favorite due to the terrain and sun exposure. To the left (south) of the chair is the backcountry, out of bounds but accessible for those with proper gear (particularly shovels and avalanche beacons). Being a geek, I couldn't help but appreciate some of the avalanche patterns. The photo on the right captures some of the backcountry on Shuksan Arm, near the top of Chair 8. You can see tracks where a couple of skiers started at the top left, came down the cliffs, and then traversed the top of the bowl. If you look at the top track in the bowl, in the middle left of the photo you can see where small avalanches were started by the traversal. These have a triangular shape. It looks like the skier dislodged a small chunk of snow, which tumbled down and dislodged more snow in an expanding slide, until a large (triangular) section of the bowl had slid. That means most of the snowpack was sitting there, ready for any disturbance to cause it to slide down. Obviously, it is a sign of avalanche danger. But that is also the classic definition of a metastable state. The whole system (the entire slope) was stable, but barely. Any slight interaction would cause it to collapse. This sort of behavior is what leads to supercooling, and of course avalanches. Lightning is also a form of metastability. [Aside: I created my first wiki page! The Metastable State page redirected a couple of times, and context was lost in the process. I felt the general concept was worthy of a dedicated page. We'll see if it survives the harsh environment of seasoned physical science wikipedia authors.] Comments |
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| Thu Apr 17 20:00:52 2008 Edward Lorenz, 1917 - 2008 Founder of Chaos Theory. |
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| Edward Lorenz died yesterday. You can also see his bio on wikipedia. That entry notes he "brought about one of the most dramatic changes in mankind's view of nature since Sir Isaac Newton." That's an amazing comparison! But it may be a fair one. Chaos theory shook up how people (and mathematicians) modeled and thought about systems. Uncertainty and unpredictability were put at center stage, and to some extent explained. I had heard of Lorenz's work mostly through the great book Chaos, which is well worth a look if you haven't already read it. One of the things I found fascinating was that Lorenz did all of this great mathematical work while constructing models of the weather. Later, as mathematicians were exploring chaos theory, they were shocked to discover Lorenz's seminal papers in journals like "American Meteorologist Monthly." As part of modeling the weather, he noticed (by accident) that he'd get wildly different weather patterns if the starting conditions for his simulation were even slightly different. This was later coined as the butterfly effect, which has to be one of the most over-used (and poorly understood) scientific metaphors in popular culture. As a grad student working on my own simulations of semiconductor systems (which were also chaotic!) I definitely ran into this effect. Chaos theory has been helpful to describe multiple systems I've worked in, from semiconductors to distributed systems to markets. Comments |
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