The full circle

Published November 13, 2012 · Estimated reading time: 3 minutes · Share your thoughts
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Maybe this is the sign of an impending quarter-life crisis…. but I’ve been thinking a lot recently about what inspires me and what I want to achieve in life. I was fortunate enough as kid to always have access to libraries, and found solace, constancy and direction in books that I had nowhere else. More so than school, than parents, than teachers it was the books the words of often long-dead friends, that influenced and shaped the paths I chose and the decisions. But there is a long way from Verne’s journey to the center of the Earth to Dosteovsky’s contemplative meanderings through the alleys of St. Petersburg– and none of it seems particularly relevant to how I ended up sitting in a cafeteria in Montreal.

I became involved in research in civil/environmental engineering in high school, and right up to the point I was about to enter college I was convinced I was going to be an engineer. But as it is in life, sometimes the two roads diverge, and when I received the acceptance letters for the Faculty of Engineering and the Faculty of Science I had to make a choice. I drew the lists you’re supposed to, looked at pros and cons, and tried my best to take a circumspect approach. But when it came down to the decision, it was rather arbitrary– I just knew. So at the end there I was, in the Faculty of Science, with hundreds of specialties and thousands of courses I could take. I have to admit at that point I was quite envious of the people who knew exactly what they wanted, because the more lists I made the less certain I found myself.

After jumping from program to program, taking dozens of courses that I would probably never need again (looking at you physical chemistry), by (fortunate) happenstance I finally found my place in Anatomy. For some time, though, it seemed to me that there was absolutely no rhyme and reason in the paths and places life had taken me. As an adult, I’d escaped the certainty of books, and ended up in the chaos of the real world.

Recently, I was looking at a pile of old writings and drawings I’d brought from my last trip to my grandmother’s place… and by old, I mean from when I was 5. That year, I’d found the translated version a book called “The Incredible Journey Through the Human Body” by Nicholas Harris. I remember the hours I spent utterly obsessed with this book and its characters (and of course that shy moment where I learnt where babies come from). Looking at the pages of my old notebook, I find it striking that years later I should have ended up in taking a course working with cadavers and exploring the human body in person. I probably shouldn’t lend this meaning, given that I didn’t remember at all during the duration of my degree. But, frankly, I have this strange suspicion that this entire time a little 5-year-old with with a book in hand was nudging me as she looked out curiously though my eyes.

Permanent linkMarzieh Ghiasi

FiveThirtyEight: Predictive analysis in the Social Sciences

Published November 07, 2012 · Estimated reading time: 4 minutes · Share your thoughts
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In discussing the US presidential elections with American friends over the years, I’ve heard frequent complaints, and I quote “the entire thing is treated like a horse race surrounded by a media circus“. I have to confess that despite my sensibilities, when it comes to this particular horse race I find myself an entertained spectator through ‘Five Thirty Eight‘.

Reading Asimov’s Foundation series as a kid made me long-time predictive statistics enthusiast. To my delight, I found and have followed Nate Silver’s blog and his election forecasting since his pseudonym (Poblano) days back in 2008. But, what really caught my attention in this case were not just Silver’s forecasts. It was the logical way in which he laid out his arguments and the remarkable clarity in which he delineated his supporting evidence for the layperson. This was in direct contrast to the pundits I was reading from who appeared to be, very literally, making up things. Of course, there was also the thrill of watching the numbers go up and down, and change left to right and right to left.

It was not a tremendous surprise, at least for me, to see that Silver’s predictions were right for the 2008 election. However, this election was presented by the majority of pollsters and pundits as one that would be incredibly close, a sentiment which Nate Silver contested at least on the basis of his electoral college number-crunching. Consequently, there was a lot of speculation not only on which candidate would win, but also which pollsters, pundits, and analysts would be redeemed and which would burn away in fiery shame after the election results rolled in. Gambling on the gamblers. One interesting article was one that came out this week, a column by Jonah Goldberg that questioned Silver’s predictions, and simultaneously appealed for a move away from the “cult of numbers”.

“I’m not saying Silver’s just lucky or shoveling garbage. He’s a serious numbers guy. But so are the folks at the University of Colorado’s political science department whose own model is based on economic indicators. Its Oct. 4 findings predict Romney will win, as do others… I like to think that people are different, more open to reason, and that the soul — particularly when multiplied into the complexity of a society — is not so easily number-crunched.”

Well, Nate Silver was right. Which has led some to speculate that he maybe be Nostradamus reincarnate or a witch. To be fair, so were a a number of other witches and wizards. The implications of the election outcomes aside, I was pretty satisfied that FiveThirtyEight turned out to be completely on target (though I think the writing is worth it even if the predictions were completely wrong).

Given the coverage that these ‘grand wizards’ of the ‘cults of numbers’ are getting (stretching the metaphor here), it is clear that there will more and more demand to reach forecasting into quarters where it hasn’t really been applied before, outside perhaps advertising research. In fact, the future is already here. There was an article in nature back in 2009 that attempted to model insurgencies, laying the groundwork for predictive models (see Sean Gourley’s great TED Talk), millions of dollars are being spent to develop computational social science models that can forecast “Cloudy, with an 80% chance of war”. Earlier this year Slashdot had an article on these models with the headline “Asimov’s Psychohistory Becoming a Reality?” I’m personally very interested in health planning and policy, and curious how this emerging predicative statistics arms race will affect policy making in this arena.

Asimov’s psychohistory (and the driving force behind the novel’s narrative) was based on the premise that “while one cannot foresee the actions of a particular individual, the laws of statistics as applied to large groups of people could predict the general flow of future events.” But, this vision might not even be the most ambitious, as neuroscience and psychology are fields moving towards creating a deterministic model of the individual as well (though realistically, such developments are many years away). I’m personally a numbers gal but in the courses I am taking and the groups I collaborate in, there is always the reminder that there are people behind the numbers and that there are facets of individuals and societies that absolutely cannot be quantified.

Don’t get me wrong, I am absolutely looking forward to a future where policies are based on empirical evidence rather than somebody’s gut feelings or popular opinion. However, I do wonder whether there are things that we miss as we seek to quantify and fit every facet of social patterns and behaviour into statistical models. Though I am not per se concerned about number crunching ‘the human soul’ I think Goldberg presented at least one important idea in his article: are there in fact facets of humanity that are simply not quantifiable, and not predictable? Or can we encompass everything we are and we will be as a society into neat statistical models?

Permanent linkMarzieh Ghiasi
  • Aug 13, 2012 » Montreal at night
    Look, stranger, on this island now
    The leaping light for your delight discovers,
    Stand stable here
    And silent be,
    That through the channels of the ear
    May wander like a river
    The swaying sound of the sea.

    W.H. Auden (Look, Stranger! 1936)
    Via NASA Goddard Space Flight Center # #