Friday, July 6, 2012

Checking the Higgs Arithmetic


Although the Higgs boson is of incredible theoretical importance and is responsible for giving known elementary particles their mass, it’s getting far too much credit when it comes to the origins of most of the mass present in ordinary matter.

The proton as a relativistic quark-gluon soup.
(Fermi National Accelerator Laboratory)
On the subatomic scale, masses of particles are measured in units of MeV (millions of electron volts). The familiar proton weighs in at about 938 MeV. According to the Standard Model, its primary components are 2 up quarks, each with a mass of about 3 MeV, and a single down quark, tipping the scales at about 5 MeV. All totalled, the mass of the 3 quarks in the proton account for around 11 out of 938 MeV of its mass, or on the order of only 1%.

Where does all the rest of the mass of the proton come from? It comes from the energy of motion of the three quarks whirling around in their proton enclosure at near the speed of light and from the energy of the gluon field that keeps these quarks tightly bound together. These forms of energy, as Einstein told us, are equivalent to mass.

So remember, although the Higgs may have gotten the mass party started, other forms of energy, mostly gluons it turns out, are the other 99%.

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Checking the Higgs Arithmetic by Marc Merlin is licensed under a Creative Commons Attribution 3.0 Unported License. Based on a work at thoughtsarise.blogspot.com.

Monday, April 30, 2012

Open Mindedness and the Teaching of Science in Public Schools

This essay began as my contribution to a discussion on the Atlanta Science Tavern message board having to do with the topic of a recently announced meetup, The Christian Right's Assault on Public Education and the Science Curriculum, featuring Katherine Stewart, author of the book, The Good News Club. One of our members Deb spoke out about what she felt was the threat posed by the kind of close mindedness which would prevent including creationism, for example, in the public science classroom. What follows is an edited version of my response to her.

I wanted to add to this lively exchange by trying to focus the discussion to see if we can make some headway with the issue at hand - or at least what I believe to be the issue at hand - and that is the proper way to go about formulating the science curriculum for public primary and secondary schools.

Let’s begin by turning our attention to Deb’s concern about the price we pay by closing our minds to alternative points of view in science and elsewhere. In some respects I couldn’t agree more, open mindedness is a personal virtue, one that I aspire to in my own life. I hope that I can live up to Deb’s expectations for me!

Of course, our striving for open mindedness has to be tempered with what I would call discernment. Each day we have to entertain a myriad of choices, but ultimately we have to make final decisions, sometimes critical ones having to do with our own welfare or that of other people. Good judgement is the balancing act we perform that results from maintaining an open mind while relying on significant lessons we have learned about what sources of information and advice we can trust as we go about selecting between alternative courses of action.

In addition, I would agree with Deb that it is incumbent upon us to inculcate open mindedness in our children, and I do believe that the schools, both public and private, have an important role to play in this process. That said, schools are also a way for us confer upon our children the hard-won rewards of our experience, not only as individuals, but as a culture and as a civilization. To lay before them a set of options without offering them the benefit of our collective knowledge would be a disservice, perhaps even a crime.

Nowhere is this obligation clearer than in the K-12 science curriculum. That is because, unlike other other fields of human endeavor, after centuries of struggle, the scientific enterprise has answered fundamental questions about the nature of the world beyond any reasonable doubt. The confidence of these positions is embodied in what is called the scientific consensus. While acknowledging that scientific “truths” such as these are always provisional, we understand them to be of a different quality than competing opinions and so raise the bar as to what will be the foundational knowledge that we choose to transmit to young and growing minds.

To understand this better, I think that it is useful for us to consider another element of the science curriculum and that is the germ theory of disease. I ask that the participants in this discussion to test the validity of their approaches by considering how well they fare in this analogous context.

Louis Pasteur photographed
by Pierre Lamy Petit
The germ theory of disease, the idea that disease originates, at least in large part, as the result of infection by microbes was, like Darwin’s theory of evolution by natural selection, a triumph of 19th century science. This is not to say that it reached its current form then. Viruses were unknown to Louis Pasteur. Likewise, the injuries that can result from chronic exposure to, say, low-level radiation or pesticide residues were unanticipated by Pasteur. No doubt, much of the harm that befalls us is self-inflicted, indicative of bad “lifestyle choices” having to do with diet, for example or the use of addictive drugs and has nothing to do with germs.

Nonetheless, the germ theory has become enshrined as part of the scientific canon and recognized as the undisputed scientific consensus. More than a theoretical notion, Pasteur’s and Robert Koch's legacy has been the foundation for the development of medical therapies - everything from the practice of asepsis in hospitals, to childhood vaccinations to antibiotic drugs - that have saved hundreds of millions of lives.

Quartz (Rob Lavinsky / IRocks.com) 
Be that as it may, a controversy still swirls around the germ theory of disease, not in the scientific community, but in a variety of sectors of the public mind. Some of these challenges have to do with an understanding of the very origin of disease itself, with the blame laid not with bacteria and viruses but with such things as an imbalance of energy fields in our bodies or the misconfiguration of our spines. More commonly the controversies have to do with what constitutes effective treatment of disease, with homeopathy and crystal healing being offered notably as competing "alternative" therapies. There is even significant opposition from some quarters to vaccination as a safe and effective public health measure.

I want to emphasize that the question I am posing is not whether there is some documented basis to these competing claims - I am confident that the list of citations is endless - but whether they should be introduced into the public school curriculum to balance the teaching of the germ theory of disease.

Two-year old Rahima Banu of Bangladesh,
the last person infected with
naturally occurring Variola major, in 1975
Would we be derelict not to include our classroom discussions the presentation of homeopathy, crystal healing, chiropractic as effective alternatives to the treatment of human ailments, on a par with antibiotics and accepted surgical practice? Are we obligated to teach this controversy? Should we instruct our children in elementary school that they should be suspicious of the vaccinations that their family doctors give them, telling them that there are some people who say vaccines are not only ineffective but even dangerous?

Furthermore should the science curriculum in this regard be expanded to include a discussion of the “ultimate” cause of disease, causes that in some immaterial sense precede its origins in entirely natural processes?

Should students in a high school  biology class learn that disease might find metaphysical roots in the karmic balancing of accounts from our past-life transgressions? Should they be taught that cancer, for example, could be construed as the fruit our original sin and proof of our fundamentally corrupt nature? There are not an inconsiderable number of people, if the popularity of Oprah's book selections is any indication, who believe that the ailments that beset us, including those that torment the tiniest infants, emanate from our failure to maintain a positive attitude about ourselves and about the world around us. Should these points of view be included in our biology textbooks?

So, in closing this addition to the discussion, I ask for you to put the particulars of evolution debate aside and consider the analogous question about teaching a different scientific theory - with an open mind of course. I look forward to hearing whether you see the parallels as being applicable to the original debate and how concerns about “teaching the controversy” might apply here.

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Open Mindedness and the Teaching of Science in Public Schools by Marc Merlin is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Based on a work at thoughtsarise.blogspot.com.

Saturday, October 8, 2011

"Moneyball" - The Rise of the Planet of the Quants

Imagine a situation characterized by fierce competition over valuable, but limited, resources. The rich few, with the deepest pockets, indifferent to questions of cost, have no problem paying for and monopolizing the best that is available. Meanwhile those in the middle, not to mention those at the very bottom of the economic ladder, are locked out from participation, and must content themselves with the scraps that the wealthy leave behind.

Along comes a man, armed with reason and with numbers, daring to apply dispassionate analysis to this vexing problem in a last-ditch effort to level the playing field for everyone involved. His deliberate, calculated approach, though, is decried as soulless and is called a desecration of tradition, an attack on the established way of doing things that, according to those well-off, is "working just fine, thank you."

Ironically, the abundant criticism leveled at him includes that from the ranks of the disadvantaged, who, it would seem, would be his natural allies. So besotted are they with the mythology that surrounds the status quo, that they fail to appreciate that the system, as it is constructed, is pushing them to the margins more and more each day.

Theodore Roosevelt
Undeterred, our hero presses on, like Theodore Roosevelt's man in the arena, "who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat."

The above, which could have been a description of Barack Obama championing his health care reform plan in the more promising days of the spring of 2009, works well as a set-up for the events that unfold in the baseball bio-pic Moneyball, directed by Bennett Miller.

The man in the arena here is Oakland A's general manager, Billy Beane (Brad Pitt), and the arena is the world of baseball at the end of the 2001 season, a world in which rich teams like the New York Yankees raid lesser ones, like Billy's, luring away superstar talent with offers of astronomical salaries that owners of teams like the A's could never dream of matching.

As Moneyball opens, we find a desperate Billy seeking guidance from his "wise men" council of baseball scouts - a gaggle of aging men who look like a misplaced assembly of Mafia consiglieri and sound like a post-modern Greek chorus fated to intone endless baseball cliches in response to Billy's pleas for useful advice. Frustrated by their disregard to the peril that confronts them - and the game of baseball itself - Billy heads off to Cleveland, home of baseball's Indians, in a hail-Mary attempt to wheel and deal his way to a team that will keep him in contention.

Jonah Hill as Peter Brand
in Moneyball
There he encounters an unlikely muse in the person of 24-year-old Peter Brand (Jonah Hill, in a breakout role worthy of a supporting-actor Oscar nod). Peter is a recently minted Yale economics graduate and a savant of baseball statistics and finance, a major-league quant, if there ever was one. He has been spinning his wheels working in the Cleveland front office where his insights about the game have been largely ignored. Unlike his Cleveland counterpart, though, who is sitting flush, Billy's mind is keenly focused by the impending execution of his 2002 playoff hopes, and so he is open to ideas from any quarter. A passing remark by Peter in a crowded meeting draws him to Billy's attention, and the rest, as they say, is history - baseball history.

What Peter has figured out, to put it simply, is that you don't need stars to put together a winning team. Indeed, a roster players each of whom gets on base a significant fraction of the time will generate, in aggregate, the number of runs necessary to win games. Their skills on the field, it turns out, are not of much consequence. What is more, such often overlooked or cast-aside players - hobbled by injury or long past their prime, but eager to stay in the "show" - are available at bargain-basement prices.

Billy, who is one smart cookie himself - we learn that he turned down a scholarship at Stanford to pursue his ill-fated major-league dream - groks Peter and his new thinking and is able to see beyond the received baseball wisdom which blinds his own scouts and coaches to the statistical truth. And thus is born a professional partnership between the two men, as well as a burgeoning friendship. Their Mutt and Jeff relationship adds a nice buddy-movie wrinkle to Moneyball, and the story, in a small way, becomes a rite of passage for Peter, providing the young man with the opportunity to be taken seriously for the first time in his life, but also forcing him to confront the burdens that come with leadership.

What I liked most about Moneyball, though, is that it is a refreshing and welcome inversion of what I call the American heart-head parable. These are tales in which embattled heroes triumph by choosing to rely on feelings instead of brains when facing challenges and vanquishing foes.

Luke Skywalker on his final approach
in "Star Wars"
Perhaps nowhere is this elevation of heart over head better captured in a film, than the in the climatic battle scene in the first Star Wars movie in which Luke Skywalker, at the urging of his mentor Obi-Wan Kenobi, turns off the targeting computer in his X-wing fighter and "uses the Force" in order to direct the shot that will destroy the planetocidal Death Star.

"Liberty Valence" movie poster
Yet the heart-head trope has a distinguished pedigree in American cinema, supported by both an enduring distrust of (dithering) intellectuals and a admiration for (determined) men of action in the culture at large. A notable example is the classic 1962 Western The Man Who Shot Liberty Valence, in which Jimmy Stewart plays an educated and earnest, yet ultimately ineffectual, attorney, committed to the rule of law, and John Wayne, a rancher and his school-of-hard-knocks doppelganger, who understands that there are times when, the law be damned, a man's got to do what a man's got to do.

For the generation coming of age during the Cold War this film served as a cautionary tale of the inadequacy of law and, by extension deliberative analysis, in confronting genuine evil in the world. Its lesson was one well heeded by those, like Dick Cheney, who advocated for such scurrilous tactics as unwarranted surveillance, water-boarding and extraordinary rendition in response to the 9/11 attacks on this country.

Sadly, the American love affair with political figures who are suspicious of book-learnin' and rely on God and guts as lodestones for their decision-making catapulted the intellectually incurious George W. Bush to the highest office in the land. Hundreds of thousands of innocent deaths and the undermining of the international legal order testify to the destruction left in the wake of this two-term cowboy President. Lest we think that Bush's abject failures at home and abroad have led Americans to reassess the relative value they assign to heart and head when selecting their leaders, Sarah Palin's exhortation to the Tea Party Convention in February, 2010, that "we need a commander-in-chief, not a professor of law standing at the lectern," demonstrates the currency that the world view of Liberty Valence has in American politics.

Doctor and Boy Looking at Thermometer
(Norman Rockwell, 1954)
Erstwhile presidential hopeful Palin herself figures prominently in our ongoing Moneyball moment, that is the debate over healthcare reform, which calls us as a nation to come to grips with the increasingly inequitable distribution of an increasingly costly shared resource, namely medical services. Educated and caring men and women, seeing the failure and imminent collapse of the current system, have entered this arena armed with numbers and with reason. Their approach has been decried as cold and unfeeling, and their plans to allocate resources based on a compassionate weighing of costs and benefits - replacing the arbitrary and unregulated rationing in effect - have been shamelessly misrepresented by Palin and her supporters as "death panels." Furthermore, these champions of rational health care policy have been called out as iconoclasts, intent on undermining the cherished close personal relationship between doctor and patient, a tradition which persists in the paintings of Norman Rockwell's idealized version of mid-twentieth-century America life, complete with house calls, but nowhere else today.

So Moneyball proudly steps up to the plate and, for a change, celebrates a man, Billy Beane, who, when faced with a seemingly intractable problem, is not afraid to turn to numbers and analysis when traditional approaches have failed. Billy represents of a new kind of American hero, one who feels passionately about thinking things through, an intellectual, who, like Roosevelt's man in the arena, is not afraid to "dare greatly." In a time when it is crucial for America and its leaders to abandon gut feelings and received wisdom as ways to address the dire problems that we face and, instead, to bring to bear innovative thinking based on a scientific understanding of the world, Moneyball offers us a sorely needed updating of our long-discredited heart-head mythology.

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"Moneyball" - The Rise of the Planet of the Quants by Marc Merlin is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
Based on a work at thoughtsarise.blogspot.com.