Prescriptivism and Mysticism

It struck me that grammatical prescriptivism bears a very similar relationship to linguistics as does mysticism to science. This can be analyzed from a philosophical as well as a political perspective.

[Edit: It was pointed out to me that my use of the word "mysticism" here is inappropriate. By it I mean any sort of magical or supernatural thinking, rather than the more usual notion of special states of consciousness meant to put one in touch with the divine. Additionally, a few edits were made towards the end to make my main point clearer.]

Both mysticism and prescriptivism operate on the basis that there need to be certain well-defined rules for how the world works (even if that rule is just "because that's how God did it"). In each case, there is a very strong reluctance to let go the reigns of reality, as it were, for fear that utter chaos would result. The mystic needs their magical system to keep their crops growing, their cities plague-free, and their soul saved. Similarly, the prescriptivist needs strict usage rules to make sure their sentences are (what they consider to be) optimally readable, socially and politically correct, and up to some abstract standard, lest all semblance of readability and communication disappear. In each case the advocate of such rules fails to see that their rules are arbitrary and related to reality only through social convention and particular modes of thought. They miss the point that their devotion to the actual facts of the world is outweighed by their devotion to an already-given system of rules. The rules of both the mystic and the prescriptivist are arbitrary rules.

Now, there is certainly a place in society for arbitrary rules. In the United States, people drive on the right side of the road. If we don't all agree to do so, there will be a lot of head-on collisions. But we don't look at England or Australia and scream that they are doing things wrong and need to change which side of the road they drive on. There may be a bit of inconvenience in shifting from one to the other, but no one in their right mind would claim that there is a correct side of the road to drive on, and an incorrect one, and that America is correct and England incorrect. They are just arbitrary stylistic choices. (Well, maybe.)

Similarly, religious prescriptions are arbitrary rules insisted upon by people with an interest in standardizing the behaviors of members of a given community (including thoughts and utterances). And grammatical prescriptions ("no dangling modifiers", "no stranded prepositions") are arbitrary rules that have been historically insisted upon by people with an interest in standardizing the grammar of a given language.

Of course, I am assuming my reader agrees with both of these assertions. The first one is easy for many people to accept (or at least grant for the sake of argument), as opposition to mystical ideas has a long and proud history, in the form of rationality and science. The second one, though, has its basis in the very young and very much still growing field of linguistics, whose goals, methods, and justification few people have been exposed to, and fewer still understand. But prescriptivist accounts of language fly out the window the moment you actually look at human language as a natural phenomenon. Just as the thunderbolts of Zeus turned into electrical imbalances between the ground and atmosphere, dangling modifier and double negatives turn into simple sentences perfectly comprehensible to speakers of the relevant language. If one speaker says something and another understands the utterance, then grammatically correct linguistic exchange has transpired, regardless of whether any English Grammar Rule Book rules were violated. By way of example, I ended an above sentence with the phrase, "which side of the road they drive on." Nothing exploded. No hair-pulling confusion resulted. Yet I violated a rule of "proper English grammar". But this post isn't about convincing people that prescriptivism is wrong — only that it shares a certain key feature with mysticism.

I insist that in both the case of the mystic and the prescriptivist, there is either a lack of competence in understanding the rules by which nature operates or an emotional attachment to the social implications of the rule set. The mystic cannot grasp the science behind evolution, quantum mechanics, or cosmology, much as the prescriptivist cannot grasp the science behind linguistic universals, childhood language acquisition, or sociolinguistic discrimination. The mystic feels that they are saved and loved and special, much as the prescriptivist feels that they are proper, correct, and supremely literate. But both case are driven by either ignorance or contempt. In neither case is one able to recognize the elitism involved. Or, if the elitism is recognized, it's immediately defended as good and justified. One must be a speaker of "good English" much as one must be a "good Christian". And failing to be so means that you are inferior to the defender of this (dubious) Good.

But because linguistics is a young field which has not yet permeated the cultural fabric, we scoff at linguistic discrimination just as readily as we decry racial or religious discrimination. If you can't talk good, you must be stupid and inferior to all of us who can speak well. This, however, is just ignorance of the way in which people learn language and the way in which language changes, and an almost-mystical assumption about the existence of some Platonic True Form of a given language. It is ignorance of the fact that this Platonic language almost always coincides with the way the elite speak, be they London aristocracy (where "standard" British English comes from) or Muscovite czars (where "standard" Russian comes from).

As an aside, it must be pointed out that this ignorance costs people in very real ways. Being a speaker of a non-standard dialect cannot, on principle, relate in any way to intelligence or ability. There are astrophysicists in Memphis, Manchester and Mumbai alike, each speaking very different versions of English. Sounding Black on the phone is often a sure-fire way of not getting past a first interview. Having a Queens accent is just the same. Yet such linguistic variations have nothing to do with intelligence, training, education, personability. They are merely artifacts of our physicality, of our vulnerability to our social environments as children. We speak the way the people around us speak.

A final thought: there are good reasons to have arbitrary rules. And this applies to grammatical rules. Writing is a suboptimal translation of language, because it misses so many of the nuances essential to conveying understanding, such as tone, pace, volume, expression, etc. So in order to make writing understandable to others, it is important to have usage and spelling rules. In a written document, double negatives are recognized as negating each other, rather than the sentence as a whole (as is the case in, for example, Italian). Standardized spelling and punctuation are essential to the way English is written and read. But insisting that such rules be transferred from the page to the spoken word is ludicrous. Writing is the only place that needs the extra stringency of arbitrary grammatical rules. And it inherits this property from the already-natural-rule-governed richness of spoken language.

Jaynesian Consciousness, or Why Consciousness Is Not What You Think It Is

Many people use the term "consciousness" to mean a huge variety of things. In this talk by John Searle, he attributes consciousness to his golden retriever. I have had conversations with people who say that consciousness is a matter of degree, all the way from plants up to humans. The idea that consciousness is somehow a fundamental and pervasive feature of biology is a very common idea — but is simply wrong.

If you've ever driven a car for any length of time, you've almost certainly had the experience of driving for many minutes at a time, and only coming to realize very near the end of your trip that you'd reached your destination. For miles and mile, you monitored traffic, changed lanes, taken turns and exists, all while blissfully daydreaming or listening to your favorite music. The realization that you had arrived might have come as a bit of a shock, a record-skip from the last moment you were conscious of driving to that moment, when you became conscious of it again. The entire time, your brain faithfully carried out all the complex, precise movements required to keep the car on the road and going in the right direction without your conscious awareness.

If consciousness were somehow fundamental to human cognition — or cognition in general — this would not only be impossible, it would not even make sense! However, it is very possible, and extremely common! Nervous habits are often completely outside consciousness until pointed out. The vague recollection of dreams — not to mention their very existence — is another place where consciousness is shown to be fuzzy and transitory. Various drugs that can destroy the ego or cause us to have blackouts are similar. Hypnosis and schizophrenia, phenomena that suppress or eliminate conscious control and replace it with hallucinatory or external control, would be just as absurd. Spirit possession, found in a multitude of cultures, would require actually supernatural explanation, rather than a more prosaic psychological one. The entire notion of inspiration is entirely unrelated to consciousness, in fact! Invention and intellectual discovery, often naively identified with conscious reasoning, is in fact almost always the result of sudden flashes of insight which come upon one in the shower or while taking a walk, rather than consciously worked out piece by piece from premises.

Daniel Dennett is fond of saying that consciousness is an illusion. I think that's too strong. It's more accurate to say that the fundamental and all-encompassing nature of consciousness is an illusion. What seems to us the basic operating principle of the brain is actually a much more limited object. Others subvert reason, logic, memory, understanding and planning to consciousness. However, these are all separate things. The term "consciousness" is best reserved for the self-introspecting ability that seems unique to human. It is that constant stream of language we hear in our heads at all times, almost uninterruptibly, which allows us to form a sort of internal mind-space, and to give ourselves declarative commands in the form of decisions and arguments.

Various animals share almost all the cognitive features of humans in some combination. Dolphins are highly intelligent, playful and social. The other great apes share our sociability, and to some extent our language. Many animals, from chimps to pigeons, can either learn or be taught to recognize themselves is mirrors. Dogs and crows can recognize individual humans and react to each in unique ways. Chimps, crows and some fish make and use tools. Ants, termites, spiders, and birds build homes. In fact, it is extremely difficult to come up with a human faculty which is not also expressed by some animals.

One ability which very probably does distinguish us from all other animals is our ability to model the world around us in certain ways. An important part of brain function in any animal is modeling the world it inhabits. This allows it to plan and execute movement in useful and beneficial ways. Without a mental representation of the world, movement would be meaningless and uncoordinated. An animal's brain must know — that is, represent — the details of its environment and its own body in some way so that it can interact with it. Many intelligent animals, including us, take this a step further. We do not merely build models of our physical environments, but also of our social environments. It must be the case that, up to some point in our evolution, humans went no further than this. But eventually we took it another step further: we made models of mental environments. That is, we created models of how minds work, presumably whenever it was that we figured out that other humans had minds.

And that is exactly what consciousness is. It is the ability to make absract, multi-level models of minds, including our own. This ability is granted to us by the linguistic relationship between sounds and meanings in combination with a cultural focus on self-hood and narrativity ("narrativity" referring to our habit of telling stories about ourselves and events around us regardless of whether such stories actually relate in any way to reality). This ability to simulate the mental world not only lets us generate new ideas and inventions, it also lets us model the inner world of other people, to guess their thoughts and motivations. Here I don't mean empathy, which chimpanzees almost certainly share with us, but rather an ability to very literally read another person's thoughts, to form words in your head which are likely similar in meaning to the words they are forming in theirs.

This analogical mind-space, and the cohesive sense of self that it leads to, was first described by Julian Jaynes in his criminally misinterpreted and completely underappreciated book The Origin of Consciousness in the Breakdown of the Bicameral Mind. Daniel Dennett is one of the few thinkers on consciousness who openly acknowledges Jaynes's influence on his own ideas, but many others have proposed effectively identical characterizations of consciousness, most notably the neuroscientist and philosopher Thomas Metzinger, whose monograph Being No One lays things out in great detail.

The more I come to understand consciousness, the more tentative my grasp on my own consciousness feels. I become more and more aware every day of just how little of my everyday life I am conscious of. Malcom Gladwell's Blink, derided by many as anti-intellectual, is in fact an excellent document on the limits of our conscious thought, and at the same time of the power of our brains as a whole. Thinking, reasoning, learning, talking, inventing, discovering, and, for the most part, acting are all non-conscious events. Consciousness is just a curved mirror held up to our mental world, reflecting itself and its surroundings.

[Edit: Thanks to my friend Rob for pointing out a very important mistake I made, whereby I failed to distinguish modeling the world from modeling the mental.]

On the Fundamental Interconnectedness of Science

Scientifically illiterate people tend to make wild claims about new discoveries after reading third-hand articles on CNN.com or in the Fortean Times. Creationists have been doing this with every tiny bit of contradictory biological evidence since Darwin. New Agers do it with quantum mechanics. Regular people do it with tiny advances in technology or overblown predictions from hack journalists.

A stark example was the big scare at CERN over faster-than-light neutrinos.When the results were publicly announced last year, a chorus arose in indignation of the clearly malicious lie the academy had been spreading for the last century, that the speed of light was a fundamental speed limit in our universe, and all the physical effects this implied. Short-sighted people, believing themselves, at their Dunning-Krugeriest, to be incredibly farsighted, proclaimed a new age of physical theories and hyperdrive travel. They scoffed at the closed-mindedness of science in making such outrageously doctrinaire claims as that there were limits on the movement of objects in space! There were certainly no limits to the human spirit! ...or some such.

What these breathless blowhards don't understand is that no one seriously considered the possibility that said neutrinos were traveling faster than light. A few theoretical physicists came up with some pet models that might allow a special variety of neutrino to do something weird, but that's because they have nothing better to do. The uproar in the physics community was not about the possibility of faster-than-light travel (many people make claims about discovering such things all the time), but rather about how a huge, extremely carefully set up, and thoroughly verified experiment could produce such results! What sorts of error could be the cause, and could that error populate other results in other experiments? As it turns out, it was a loose fiber optic cable, a simple human error, but one incredibly hard to catch on practical grounds. Nothing was traveling faster than light.

Here is the salient point, however: all of those people hailing the new age of faster-than-light physics failed to understand that if it were possible for something to travel faster than light, the universe would not look the way it in fact does. Distant galaxies would not appear as they do. Our computers would not work how we expect them to. Science is an intricate machine: one cannot simply remove a component and expect the thing to keep on working.

Creationists do the same thing. By claiming on the one hand that evolution does not occur, or that the Earth has only existed for six or ten thousand years, and on the other hand continuing to drive cars and use cell phones and watch television, they fail to understand that the same natural phenomenon that allows new medical treatments to be developed allows dinosaurs to evolve into ducks. They don't understand that the science which tells us how old early hominid remains are is the same which allowed us to build an atomic bomb. And of course they do not deny the existence of genetic therapy or nuclear weapons. But they do deny evolution. (Of course, creationists do not really hold a principled position at all — they pick and choose their beliefs based on authority rather than reason.)

New discoveries in science certainly can obviate old theories. The connection between germs and diseases completely destroyed older theories of disease. But not all discoveries are like that. While it's certainly true that Einstein's general theory of relativity was a vast improvement upon Newtonian mechanics, it was not a wholesale usurpation of it. For measurements below the astronomical scale, Newton's laws were and are still perfectly valid. That is, the level of description at which they work, while inadequate for measuring the orbit of Mercury, is just fine for balls and ramps, or even bridges and skyscrapers.

The mistake many people make, though, is in seeing the universe in the opposite way. They assume Newtonian mechanics is more fundamental, because it is more intuitive. They think that their ingenious "racecar headlight on a moving train" thought experiment demonstrates that you can travel faster than the speed of light. But they still use the GPS on their phone, which would not need careful timing corrections if relativity didn't work as Einstein described.

When science throws something we don't like at us, like quantum indeterminism, special relativity, or Darwinian evolution, we cannot simply choose to ignore it while accepting all the parts we don't dislike. All the various scientific fields and theories are deeply interconnected and interdependent. This does not entail that they are all correct, of course, but one cannot simply decide that something "must be wrong" without independent, scientific reasons for thinking so. Doing that rather puts you in the position, to quote Tom Lehrer, of "a Christian Scientist with appendicitis."

Predicting the Future (and Other Abilities We Don't Have): Part 1

Humans are good at lots of things.  This series of two posts is about a number of abilities that are not among those things.  Part 1 discusses the fashionable tendency to make guesses about the future course of society and then heavily imply (without usually stating outright) that these guesses constitute accurate predictions.  Part 2 discusses the trouble we tend to have in viewing ourselves in a historical context.  This makes it easy for us to believe that we happen to live in revolutionary times, or that none of the old rules apply.  These types of charlatanism can have far reaching consequences, as it turns out.

Part 1:  Extrapolation is an Art, not a Science

One of the ways to get people to pay attention to your predictions is by preaching the good news: eternal life.  Ray Kurzweil has made a number of predictions about the bright future that technological growth will bring us, with this being by far the most notorious.  Although his version of immortality, uploading ourselves onto computers, differs somewhat from the standard Christian view, one can't help but notice the religious flavor of this prediction.

Kurzweil's other predictions for this century include, yes, flying cars, but also reverse-engineering the human brain, nearly perfect simulations of reality (for our digital selves to live in), and, crucially, an AI that is more intelligent in every way than all humans combined.  He has freed himself from any responsibility to explain how these things will be accomplished.  Nobody has the slightest idea how to do the interesting ones.

I will defer the actual technical explanation of why these are truly goofy predictions to authors who have basically handled it: Steven Pinker, Douglas Hofstadter, PZ Myers, and many others have noted how technology and scientific discovery don't progress in the way Kurzweil has claimed.  Instead, I want to draw attention to the fact that these attempts to predict the future are actually a very human tendency.

In the early 1960's, progress in programming machines to do certain tasks (like proving theorems), gave researchers supreme confidence that essentially human-like A.I. would be a solved problem within 20 years.  They should have said that at this rate, it would be done.  What actually happened was that computers became more and more sophisticated but left AI behind: the problems they were doing were just much harder than they had anticipated.  Even relatively simple tasks like constructing grammatical sentences proved to be far out of their grasp.  Now, the most successful language tools largely involve throwing our technical understanding of language out the window and using probabilistic models.

Economies are not spared from erroneous predictions about the future.  Kurzweil and others jumped on the tech-boom bandwagon, claiming in 1998 that the boom would last through 2009, bringing untold wealth to all.  Maybe they should have been reading Hyman Minsky instead of Marvin Minsky.

Enough about the good news.

The other way to get people to pay attention to your predictions is by telling them the bad news: social breakdown the end of the world.  Overpopulation is an issue along these lines that receives attention that is disproportionate to the seriousness of the claims made by its scare tacticians.  Among these claims is the belief that we are imminently reaching the carrying capacity of the Earth, at which point starvation, crowding, and wars over scarce resources will tear human civilization to pieces.

This hypothesis relies on progress not happening, the opposite of the singularitarians' reliance.  But the very same question can be asked of both: how do you know?  This is where it becomes apparent that extrapolating patterns is an art for the Kurzweils of the world.  If you extrapolate one variable, you get intelligent machines.  If you extrapolate another, you get the end of the world.  But if you extrapolate yet another, say the total fertility rate (TFR), it doesn't look so scary.  Defined as the average expected number of children born per woman, the world's TFR has been steadily declining in the post-war period, from almost five in 1950 to almost 2.5 today.  As it approaches two, the world population approaches equilibrium.

Phony overpopulation scares are common in the history of anglophone countries, from Thomas Malthus to American anxiety over the "yellow peril" around the turn of the century (see Jack London's The Unparalleled Invasion for a rosy portrait of the future).  Wealthy people and business interests are often the biggest proponents of the theory that population growth is the largest problem facing the world.  Conveniently, it's one of the only major global issues that isn't their responsibility.  In reality, the only reliable way to lower growth rates is to facilitate the economic growth of poor countries to the point where people there have a decent standard of living.

The danger in blowing the perils of overpopulation out of proportion is that it leads people to prioritize population control above reproductive rights and, more generally, morality.  If it really is that serious, then we have carte blanche to do whatever is necessary.  The bottom line is that, despite the very real possibility of overpopulation becoming an issue, there is no reason to think it is serious or imminent enough to change what our goals would be, were it not imminent.  Our immediate task is still figuring out how to get communities to lift themselves out of poverty while handling climate change and other real crises.

We have a predisposition to weigh the likelihood of possible futures, either good or bad, based on how exciting or terrifying they are instead of how probable they are.  Anyone interested in solving problems should be aware of this bias.

Part 2 covers a second, related bias that people have: the impression that the times we currently live in offer wider and more revolutionary possibilities than existed in the past.  This impression, created by the fact that we live now, not in the past, is the source of huge blunders and the general abandonment of reason.

My Solution to the Fermi Paradox

I think that the most likely solution to the Fermi Paradox is that, while life is exceedingly common in the universe, intelligent life is incredibly rare. In the four and a half billion year lifespan of this planet, life has existed on it from almost the very first moments. However, not until the Cambrian explosion about 530 million years ago did complex multicellular life exist. That means that for nearly four billion years, and starting from nine billion years after the birth of the universe, Earth contained nothing but single-celled organisms and colonies of such. And it is not until about 2 million years ago, 0.04% of the history of life on Earth, that the first technological intelligence emerged. And even that was simply monkeys hitting rocks against each other in a clever way! Anything more complicated than a stone arrowhead was invented in the last ten thousand years!

And let's look at how unlikely it is that humans (or any other hominid) ever even achieved technology. We had access to wheat, barley, and rice, easily domesticable plants that produced high yields and had good nutritional content. We had access to large animals with very particular internal dominance hierarchies which were not so recently evolved alongside us to attack us on sight, but not so distantly separate from us to be completely unwary at the sight of hunters with spears. (Here by "we" I am referring to any subset of humans who had such access — Jared Diamond goes into great detail as to who in fact had access to what.) We had access to workable stone, copious woodlands, and various ore deposits. We had an abundance of fresh water on a planet with an atmosphere suitable for lighting fires. Our luck in the development of our culture and eventual civilization was astounding. We were never subject to an extinction-level impact or eruption (although it seems that we came damn close).

I think that such luck is not only astounding, but is in fact astronomical. While life seems to have no trouble at all finding a place on a planet like the Earth (and perhaps on many other types of planets as well), technological civilization seems like and absolutely ludicrously unlikely event. It has happened exactly once in four and a half billion years (for 0.0002% of that time), or in 530 million years in which complex life has existed on Earth (or 0.0019% of that time). So I would imagine that life is in fact very common in the universe, although almost exclusively in the form of single-celled creatures living on rocks and in oceans. Very, very, very rarely one would find a planet with some sort of multicellular life on it — simple plant-like creatures, or molds of some sort. And once in an unimaginably huge while, one might expect to find a planet where technologically intelligent life once existed. Finding a planet where technologically intelligent life exists concurrently with us seems depressingly close to a fantasy.

[Edit: My percentages were two orders of magnitude off! They were simple ratios, not percentages. Thanks to Scott for pointing this out.]

Faith in Science, or, How I Learned to Stop Thinking that There Were Absolute Foundations

[This is the first post of the new blog "Cognitive Discourse", in which myself and my friends can talk about the various topics that consume most of our intellectual energy, these being primarily pop culture, philosophy, radical politics and cognitive science. The overlap between these things is interesting enough for us, and hopefully for anyone unfortunate enough to find this blog. This first post is something I wrote a long time ago, and should give a decent sense of the scope and tone this blog should take.]

This comes on the heels of an earlier essay which was woefully incomplete and is not necessary for understanding anything I'm about to write. That essay was also about faith and science, and as one person pointed out, I defined my use of the former term too loosely, if at all. So, in part, the following is an attempt to present more clearly what I mean by "faith", and why I think that it is as essential to science as to any religion. This is by no means a criticism of science. Rather, it is an attempt to show that faith is something that every human endeavour requires, be it religion, astrology, engineering or physics. I would also note that this is a philosophical take on the issue, not a psychological one. I don't purport that anyone need actively and continuously hold in mind what I'm about to expound, merely that if they followed the reasoning out, they would come to roughly the same conclusion.

Imagine a scientist coming to a point in their research where the data goes awry. Checked and rechecked, it is surely accurately recorded, and the experiment worked exactly as planned, yet it conforms with none of their prediction, expectation or theories. Imagine that this scientist, convincing their peers that everything is legitimate, spends weeks, then months, then years attempting to find an explanation for the phenomenon, and, if dedicated enough, dying with it still the pressing matter on their mind. This is, of course, a caricature, as the scientist no doubt had many other projects and interests, but, in part at least, this does characterize some problems that have arisen in science. Einstein died without ever believing his own quantum results. Copernicus never knew of Kepler. Etc.

Such things have happened for centuries. Yet, why does this happen? Why don't scientists simply say, "well, we haven't explained it; must not be naturally explicable." Surely, if you haven't cracked it in your lifetime, its worth going to the grave with the smug assuredness that no one will be able to do so. Yet they don't. They proudly (or resignedly) leave it to future generations. In fact, it would seem that the entire project of science would break down if any scientist were willing to take this supernatural leap at ANY point!

One has to admit that if scientists were willing to admit that certain parts of nature were inherently inscrutable, they could never draw a line! There would either have to be nothing at all not amenable to the inquiries of science, or any arbitrary thing at all would have to be. If we're willing to say that the several seconds after the Big Bang can never be understood, why can't we say that other early cosmic events also can't be? And if those can't be, then later ones could surely have some totally obscure properties. And so on down the line to the dying of bees and the migration of whales. But science will never do this. There will always be some new theory, we assure ourselves, and if such a theory is not available, then some new discovery or insight is always around the corner. No matter how intractable a problem seems, scientists seem to have faith that some explanation will present itself in the near or distant future.

And here we come to the crux of the matter. Regardless of whether one would think it trivial to call it such --- or would argue that you need only interest and curiosity and nothing else to continue science, or whether you would say that there are purely practical concerns which drive research --- in order for science as a whole to go on at all, you have to have the faith that the next perplexing mystery you come across won't be the one whose solution is "God-did-it". No matter how bizarre, counter-intuitive, or contradictory results (and their consequences) are, you have to have faith that they will be explainable either as error or lack of understanding. Science proceeds by calm rationality, methodical care, and occasional brilliance, but beneath all this must be the foundation that there is no point at which it will run out of answers.

This faith need not be one blindly believed! It is entirely possible (and, in certain metaphysical views, quite likely) that science truly cannot provide all the answers about nature. (By "answers" I here of course mean correct predictions and coherent explanations, not unquestionable truths set in stone for eternity --- science does not deal in such things to begin with.) This faith may be entirely misplaced, metaphysically speaking, but even if this is so, science is still by far the best tool we have ever had to discover reliable truths about reality. In practice, it SHOULD be seen as an infinitely capable, all-powerful tool for explaining the world around us. I would even go so far as to say that this is exactly how it IS seen! Imagine any phenomenon in nature which is completely immune to the scrutiny of science; it is an impossible task! Even parapsychology and cryptozoology have their share of earnest researchers striving to do good science. However, philosophically speaking, science is only a conditional: IF everything in nature is explainable by natural causes THEN the following results will form a coherent, interlocking picture of all of reality.

Faith in some form is present in all human works. There is the prosaic faith of the engineer and architect that when the bridge is built, the laws of physics will work the same way they did yesterday (or, to be cliché, that the sun will rise tomorrow). But there are also deeper levels of faith in the world around us: that the other drivers on the road won't all decide that today is the day to drive on the left side; that you will be able to accomplish tomorrow what you trained to do today; that people who loved you yesterday will do so tomorrow. You may call it trends, probability, reason, natural law; but there will always be a deeply personal level on which you don't care about those things --- you just have faith that the world works basically the same way you've always understood it to work. And the vast majority of the time that's good enough.

THIS is the kind of faith that science relies on. Not faith in something mysterious, powerful, unseen, cogent. Just faith in our own ability to seek and find answers. Of course, many will read this and think, "he's still just using 'faith' wrong; faith is a [religious/feudal/emotional] concept that has nothing to do with careful observation and experiment; science is just the method of testing hypotheses and getting relevant results". But I think that the exact same emotion that drives believers to continue reading holy books and praying is what drives scientists to explore the bounds of reality by every (repeatably verifiable) means available. If some problems could never be solved, you would never be sure that you didn't hit that particular problem yourself, and were wasting your entire life trying to solve something truly intractable. To be a scientist, it seems to me, is to necessarily and implicitly have faith that, in practice, the entirety of nature is naturally explainable.

One final, key, point must be made: it is the moral obligation of science and scientists not to assume that they start with any absolute truths. Everything at all must be open to question and scepticism. This includes the very notion that the universe is completely explainable by science. For believers in the supernatural, faith is the principle that allows them to maintain their beliefs in the absence of evidence. For scientists, faith is what allows them to continue doing what they do without experiencing an existential crisis every time they hit a dead end. It is not some wishy-washy, I-believe-because-it's-true obstinacy, but rather the thing which allows them to make great discoveries in the face of contradiction, nonsense, ridicule and sheer exhaustion. It is a faith as pure and honest (and, with apologies, more useful) as that of any monk.