I recently attended a book club discussion on The Meme Machine by Susan Blackmore (see here). In it, Blackmore puts forth a thesis of “memetic evolution” to describe how our minds work. In fact, her assertion is that our minds can only be understood in terms of memetic selection. Although that seems to be a wildly exaggerated claim, the scientific model she proposes is both stimulating and promising.
But memetic evolution is not the topic of this article. I only cite it as one example of the kind of topic that many non-scientists and even some scientists have great difficulty discussing fairly. Often in discussing such topics, a great many unfounded criticisms are lodged, and these quite often flow from an inadequate understanding and appreciation of scientific models.
This is understandable. Unless you are a trained, experienced, and particularly thoughtful scientist, you probably have had inadequate background to fully appreciate the concept of a scientific model. In fact, if you look up the word model in most dictionaries, the scientific usage of the term is typically not even mentioned. No wonder many people have a very limited if not completely mistaken appreciation of what a scientific model is. A scientific model is not analogous to a plastic model kit that is intended to look just like the real race car in every detail. It is not at all like a fashion model, intended to present something in an attractive manner. Nor is it like an aspirational model to be put forth as a goal to emulate and strive toward.
No, a scientific model is a working system that does not need to actually “look like” the real system it describes in any conventional way. The important characteristic of a scientific model is that it behave like the real system it describes. How accurately a scientific model reflects the real system it models is measured by how well it explains observed behaviors of the real system and is able to predict future behaviors of the real system.
For example, in 1913 Ernest Rutherford and Niels Bohr put forth the atomic model of matter that we are all familiar with – a nucleus of protons and neutrons orbited by electrons. This was a highly successful model because it described a huge number of observed characteristics and behaviors of matter, allowed us to gain great understanding of matter, and most importantly allowed us to predict as yet unobserved traits of matter.
But in truth the Bohr model is a laughably simplistic stick-figure representation of matter. It describes certain behaviors adequately but completely fails to describe others. It was quickly extended by De Broglie, by Schrödinger, and innumerable others to include wave and then quantum characteristics.
Despite its almost laughable simplicity and innumerable refinements and extensions made over the last century, the Bohr model remains one of the most important and consequential scientific models of all time. If the Bohr model was presented in many book discussion groups today, it would be criticized, dismissed, and even mocked as having no value.
Certainly we can and should recognize and discuss the limitations of models. But we must not dismiss them out of a mistaken lack of appreciation of the limitations of scientific models. Often these misguided criticisms have the more widespread effect of unfairly discrediting all science. Following are some examples of the kinds of criticisms that are valid and some that are invalid.
- We must first recognize when we are talking about a new idea like memetic evolution, that we are talking about a scientific model.
- A scientific model does not need to answer everything. We must recognize the limitations of every model, but the more important focus is on how useful it is within its applicable limits. Newton’s Laws do not describe relativistic motion, but in our everyday world Newtonian physics is still fantastically useful. Critics of science should not claim that a model – or science in general – is fundamentally flawed or unreliable because a particular model is not universal.
- Many critics of science think they have scored points by pointing out that “you can’t trust science because their models are always being replaced!” But models are hardly ever replaced, rather they are extended. The Bohr model was greatly extended, but the basic model is still perfectly valid within its range of applicability.
- The fact that there are many different models of the same thing is not proof that “science contradicts itself and cannot make up its mind.” We famously have the two major models of light- the wave model and particle model. The wave model correctly predicts some behaviors and the particle model correctly predicts others. Though they appear irreconcilably different, both are absolutely valid. Real light is not exactly like either model but is exactly like both models. Think of your mother. She has a mother-model that describes her behavior as a mother. But she also has a wife-model, a career-model, a daughter-model, a skeletal-model, and many others. None of these in themselves completely describes your mother, and many may seem irreconcilably different, but all of them correctly model a different set of behaviors in different situations and only collectively do they all communicate a more complete picture of your mother.
So, when discussing something like memetic evolution, it is proper and correct to ascertain its boundaries and to critique how well it describes and predicts observed behaviors within those boundaries. But it is wrong and counter-productive to dismiss it either because there exist other models or because it does not – yet – describe everything. And worst is to dismiss all of science as flawed because it puts forth multiple models of reality and extends them over time.
To describe and predict human thinking, Skinner put forth a stimulus-response model, Blackmore puts for forth a meme-model, and I often focus on a pattern-recognition model. These are not in competition. One is not right and the others all necessarily wrong. The fact that there are these three and many other models of human thinking does not reflect any fundamental weakness of science, but rather its strength.
It us unfortunate that far too few people have a sufficiently deep appreciation and level of comfort with scientific models. We must do much better to understand and communicate these subtleties that are so fundamental and critical to science.
In the Grey Matter section of the Sunday Review in the New York Times, Cornell Professors Wendy M. Williams and Stephen J. Ceci published an article entitled “Charles Murray’s ‘Provocative’ Talk.” In it, they described a small ad hoc study that they conducted to test whether the words of Charles Murray are objectively offensive and thus deserving of the level of resistance to his lecture at Middlebury College (
Some of us are lucky enough, or unlucky enough, to stumble into a pivotal event in our lives that reshapes us, blows our minds, opens our eyes, changes our perspective, forever and irrevocably. I stumbled into mine back in college in the 1980’s when I blundered into a lecture by former CIA bureau chief Major John Stockwell (
To sum it up in typical Hollywood fashion: Feud delivers a spicy pair of dishes!
The series doesn’t rely only upon these great lead performances. The 1960’s sets are recreated with impeccable attention to detail and the supporting cast is just wonderful. Catherine Zeta Jones is radiant as always in her portrayal of Davis’ friend Olivia de Havilland. Kathy Bates is believably engaging as actress Joan Blondell and Alfred Molina resonates as the beleaguered film director Robert Aldrich. Judy Davis is shamelessly scheming as gossip columnist Hedda Hopper and Jackie Hoffman delivers a comically low key performance as Crawford’s Lady Friday, Manacita. Many other classic stars make “cameo” appearances.
I’m flying to Vegas this weekend to catch “Pat Benatar and Neil Geraldo: A Very Intimate Acoustic Evening.” I have been a fan of theirs since the 70’s and am thrilled to get to see them once again. Unlike so many other older artists who simply run on autopilot, Pat and Neil have just gotten better and better with age, reinventing themselves in fresh ways while still remaining unapologetically true to their rock hard roots. No longer having megastar status has actually freed them to be truly great. Rather than being carefully manicured by the contrived glitz of big concert venues, they truly shine in intimate settings where they can stroll out on stage and warmly greet the audience wearing sweat pants and holding Styrofoam mugs of coffee.
I really, really wanted to get to my backlog of scientific blog topics today, but was distracted once again by Shawn Spicer at his daily press briefing. In defending “Trump/Ryan Care,” he repeated perhaps a hundred times that “It is an economic certainty that increased competition unquestionably brings down costs.”
Both of these vulnerabilities are at the mercy of us, the public. If we work individually but in sufficient numbers we can bring him to his knees like an army of ants swarming to bring down an elephant – the Trumpephant.
It turns out that he or she is a Northern Flicker and they are well-known to north westerners because they are regionally infamous little drummers. Of course no one can say with certainty why they do this but we can speculate. They are peckers by nature. They peck out hollows for homes with their beaks, they peck to find food, and they peck produce a unique sound that attract mates or communicate with them. Hey, they have a very efficient and powerful little hammer, and when that is all you have…
I’m sure you have heard the term “tin pot dictator.” It refers to “an autocratic ruler with little political credibility, but with self-delusions of grandeur.” This pejorative was coined in the early days of the British Empire and it associates certain rulers with the cheap, disposable containers used before the creation of the modern tin can. Like the one on the right, these cheap cans boasted labels that portrayed the contents in a highly overblown and pretentious manner. But the common people were not all fooled. They knew full well that Dinner Time Brand coffee was not exactly the Royal experience promised on the label. Thus the term “tin pot dictator” spoke volumes to them.