A Tangential Scientific Method
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A TANGENTIAL SCIENTIFIC METHOD ON THE NATURE OF SCIENCE WITH REFERENCES TO CHEWBACCA, STORK EATING ALIENS, A FEW STEVES, ONE INSTANCE OF THE WORD ³)8&.´$1'Ī48,7(3266,%/<ī7:29(5</$5*(&+,/'5(1 by David Ng 1 For the last couple of years, when I’m speaking or lecturing to a larger audience, I would sometimes throw out the following question: “Who is Chewbacca?” I do this because I’m curious on whether there are actually people in this world who have never heard of Chewbacca. Which, as a big fan of Star Wars, is a possibility that escapes me. Still, without fail, there are always a few. In fact, if I were to plot graphs around this question, I would notice that “Ignorance of Chewbacca” has been going up in a slow but steady fashion over the last few years. Furthermore, my small and caveat laden sample of data currently suggests that at least 5% of the world has no clue what this Chewbacca thing is [1]. Then, of course, things would get strange. Because usually at this point, I might ask those knowledge- able in the audience, to describe “Chewbacca” to those who are not. Here, the references to Star Wars VSHFLÀFDOO\DQGVFLHQFHÀFWLRQLQJHQHUDOFRPHRXW7KLVLQFOXGHVGLVFXVVLRQVDERXWFRSLORWLQJVSDFH ships, ripping arms off, and a description of a weapon that is a cross between a laser and a crossbow. The word “wookie” will inevitably surface, and then, remarkably you might say, someone will begin to make Chewbacca sounds – something best described as a long vibrating groan suggestive of yearning [2]. In- deed, if I give it a chance, the whole lecture hall might even begin making Chewbacca sounds, which is something that is both uniformly glorious and bizarre at the same time. Interestingly, none of this really seems to help the 5% who confessed to being Chewbacca ignorant. If anything, the 5%, looking at the strange proceedings around them, tend to look confused if not a little frightened. I bring this up, because this silly idea of Chewbacca ignorance is a bit like asking people, “What is sci- ence?” It’s one of those things where a proper answer is actually very rich in detail, and nuanced in ways WKDWFDQEHVXUSULVLQJ)XUWKHUPRUHWKHVHGHWDLOVDQGQXDQFHVWHQGWREHRQO\REYLRXVWRWKRVHÀUPO\ embedded within science culture itself. And much like the Chewbacca example, if you explain this to a person who is not part of this culture, it would probably sound a little bewildering and frightening too. To illustrate this, let’s try something right now. Find someone you know who isn’t into science. popperfont.net | thisishowitalkscience.tumblr.com | @ng_dave 1 This is probably pretty easy, since this is likely ality of how science is taught in schools – there are most people. Now ask them point blank, “What is information hierarchies that must be covered in or- science?” Undoubtedly, you will get all manner of der to get to the next level, and because the volume responses - many of which will reference graphs, of that information is intense, there is simply little measurements and technology, perhaps with nods time for students to reexamine the basic principles to things like physics, chemistry and biology. But RIWKHVFLHQWLÀFPHWKRGDQGRIVFLHQFHFXOWXUHLW- if you listen carefully, I would bet that the respons- self. Furthermore, this does not even include those HVDUHYDJXHDWEHVWDQGFHUWDLQO\QRWDUHÁHFWLRQ young students who decide to avoid the sciences of the richness involved in what I consider a prop- altogether. er answer. Sort of like the injustice that goes with describing Chewbacca as simply, “a character in a Which brings us back to aforementioned mention VFLHQFHÀFWLRQPRYLHµ of shame. After all, shouldn’t we encourage all stu- dents and citizens to continually reassess the scien- To me, this is a shame. Not the Chewbacca part WLÀFPHWKRGPRUHVRVLQFHDQHOHPHQWDU\VWXGHQW (which is a different kind of shame), but the bit is hardly in the best position to fully appreciate its about science. To me, the idea of the general public FRPSOH[LW\",VQ·WWKHVFLHQWLÀFPHWKRGDQLFRQRI reacting to the fundamentals of science literacy, in rationality - something that you hope all decision a way that the aforementioned 5% might react to a makers, from individuals making small choices to wookie sound, is a very bad thing. In fact, I would leaders making large ones, would take time to ap- suggest that this confusion or lack of familiarity preciate fully? over science is actually a dangerous thing. This is because, unlike wookies, science has an increas- Unfortunately, this isn’t how the world currently ingly active and prominent role in real life. works. Which is disappointing: because regardless of all this talk about society and danger and de- As well, this lack of clarity is not about science cisions, it would do us well to be reminded that literacy in the sense that we worry about citizens WKURXJKLWDOOWKH6FLHQWLÀF0HWKRG DQGZKDWLW who do not know about greenhouse gases, or how has produced) is, quite frankly, awesome. DNA is replicated, or how differential calculus is GRQHLQRWKHUZRUGVLW·VQRWUHDOO\DERXWVSHFLÀF So for now, we’ll end this section with something technical details (although this is important too). EDVLF:H·OOHQGLWZLWKDÁRZFKDUWGHSLFWLQJWKH But rather, it is mostly about whether a person is VFLHQWLÀF PHWKRG 3HUKDSV VRPHWKLQJ ZLWK VWHSV literate of the process; whether they appreciate the like the below: VWHSVDQGSDUDPHWHUVZKLFKGHÀQHKRZVFLHQFHLV done. It is mostly about these points because they 1. See something. represent a framework that provides the world with 2. Think of a reason why. a very powerful way of knowing things (episte- 3. Figure out a way to check your reason. mology for those who prefer big words). 4. And? 5. Now, everyone gets to dump on you. 6. Repeat, until a consensus is formed. Such parameters, of course, are often neatly laid out in what many would call “7KH6FLHQWLÀF0HWK- But don’t forget: this representation is, by no od.” Almost everyone will learn about this at some means, a complete picture or even necessarily a point in their lives, although it appears to be a topic correct picture. Indeed, Sir Francis Bacon himself, that mostly presents itself at younger ages, at the el- a man often considered to be the “Father of Sci- ementary school levels for instance. However, one HQWLÀF0HWKRGµ>@PD\GLVDSSURYHZLWKWKHVLP- DOVRÀQGVWKDWDVWKHVWXGHQWJHWVROGHULWVSUHPLVH SOLFLW\RIWKLVÁRZFKDUW will be continually diluted by an increasing glut of science technical detail. This is an unfortunate re- 2 It is, however, as good a place to start as any: and early 1980’s. Essentially, what folks observed was KRSHIXOO\VXIÀFLHQWWRDWOHDVWXWWHUWKHVHQWLPHQW that there was a discernable decline in Chinese ´3XQFKLW&KHZLHµ stork numbers [4]. As well, there was also a drop in fertility rates [5]. In other words, storks in China were disappearing and the Chinese appeared to 2 be having less babies. “You see something interesting…” But why? 7KLVOLWWOHSKUDVHLVRIWHQWKHVWDUWRIWKHVFLHQWLÀF At one level, we might suppose that the two are not process. In that it all begins when someone, pos- at all related. It could simply be a correlation and sibly you, has noticed something intriguing. This nothing more. But for the purposes of our discus- doesn’t mean that it has to be interesting to every- sion, let us suppose that we are trying to surmise one – just as long as it’s interesting to someone. In whether the two are ultimately connected - whether fact, sometimes, the science will stop right there. there was truly a causative element involved. In other words, the act of just “observing” might be good enough – think about how everyone would Here, some of the hypotheses might assume that IHHOLI\RXZHUHWKHÀUVWWRGLVFRYHUDFHUWDLQNLQG there is a continuum involved, in that one of the of creature. observations is actually directly responsible for and logically leads to the other observation. For Still, most conventional views of science would as- instance, if we play into the stork/baby mytholo- sume that you’ve seen something curious enough gy, where storks do indeed deliver babies, perhaps to merit the question “why?” And it is in that in- we can say that the decline in stork numbers was spired act of asking a question, where arguably the in turn causing the baby effect. Others, however, PRVWLPSRUWDQWSDUWRIWKHVFLHQWLÀFPHWKRGWDNHV might ponder whether there is a more central rea- form. son for the two trends. In this case, we might talk about a hypothesis that suggests one prominent We are, of course, referring to the notion of the hy- thing at play that is simultaneously responsible for pothesis: which according to the Oxford Diction- both outcomes. DU\LVGHÀQHGDV “A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation” For us, in less eloquent terms, we say that this is the part where you try very hard to “think of a reason why.” Furthermore, when you do this, you inadvertently set the scene for the next stage of the PHWKRGE\GHÀQLQJKRZDSHUVRQPLJKW´ÀJXUHRXW Here, we can try to distinguish the two scenarios ways to check your reason why.” To a scientist, this by looking at the evidence more closely. Does the last phrase is a colloquial way of talking about ex- stork decline happen before or after the baby de- periments. cline? What exactly are the numbers associated with the declines? Important, because even with For fun, let’s explore these concepts by using an the drop taken into account, the actual numbers of example. Here, we’ll focus on some interesting storks might still be more than enough to cover the observations that were noted in China during the number of babies born. In any event, as you can see, a hypothesis can be quite nuanced and is really only a small step in a much longer path. For amusement’s sake, let’s take this idea of nuance even further and look at three potential hypotheses presented below [6].