Wednesday, April 24, 2013

Science, well sort of… fracking open my brain!


Boy this has been a trip.  I set out to answer the question, is fracking, and the resulting increase in the availability and use of natural gas, on balance a ‘good thing’ as it relates to climate change. In other words, will fracking result in a meaningful reduction in GHG’s, and will the associated risks/costs be worth that reduction?   For phase one of this “experiment”, my methodology was to drift through my normal day to day interactions with various media (almost all on line now, BTW) and see where the stories and reports took me.  I probably spent about 10 hours over the last few weeks reading and listening to various sources assuming that this would lead me to an operating thesis or general conclusion.  I then planned (and still intend) to take my thesis and test it with some true experts on both sides of the proposition to see where that leads me.  But even as I started my troll through my media, I ran into a major and perhaps insurmountable roadblock to the truth…me.

As I have meandered around and under the issue of how we decide what to believe, a central touch stone to my thinking has been if we can somehow make folks aware of how they come to their beliefs, if they can be brought to a conscious level, then this may have a positive impact on their decision making.  And unselfconsciously, I have probably held myself up as an example of what can be achieved by this seemingly laudable approach.  Just be self-aware and all will be well.

So going in to my fracking experiment, I was indeed well aware of my biases.  I cataloged them, steeled myself against their intrusion, even asking for your help.  But what I was not prepared for was that despite my supposed awareness, I gleefully and unabashedly raced from source to source seeking to confirm my biases while shunning conflicting data.  I repeatedly reveled in proving myself right and avoided looking at contrary information…I frankly found it nearly impossible to approach the information objectively…oh my, even smarty-pants me.

Here’s how it played out…

First, I found little if any debate about the fact that natural gas emits about half the GHG’s of coal.  So going in any risks would need to outweigh that benefit…so far so good.

One of the major knocks on fracking is the environmental harm it is purported to cause.  This includes contaminated groundwater water, releases of methane and potential earthquakes due to the fracking.

As I started to look into these issues, my bias against zealots who stake out positions based on ideology or fear rather than science soon overwhelmed my noble quest.

My casual surfing of the various media took me to sources such as  “The Shale Reporter”, which  tells us of a man claiming to be sickened by the radioactive content of the fracking fluid flow-back who only gets relief from homeopathic remedies (…don’t get me started). On the radio, the Executive Director of an Anti Fracking NGO was unable to cite a single example of actual groundwater contamination.  I followed other threads of various claims about water contamination, and threats of exposure to lead, arsenic and innumerable carcinogens and they kept coming back to a single source, The Endocrine Disruption Exchange and Dr. Theo Colborn.  And while no doubt well intentioned, and despite protests to the contrary, the evidence offered there is not based on rigorous science. My search reinforced over and again my bias that the fears about the potential health effects of groundwater contamination may be ideological rather than scientific…and frankly confirming this bias is easier and more gratifying than challenging it.  So when I see that the EPA will issue a major report next year on fracking impact on groundwater, I already assume it will generally confirm my position, while of course calling for more research. Remember, more research is ALWAYS needed.

Similarly, my dilatory cruising of the web unearthed serious doubt about the scientific basis for claims that methane release is a big problem.  Early studies making the claim have been refuted, and at worst there seems to be pretty easy technological fix.  But again, in my gut I know I’m seeking out the threads that confirm this conclusion rather than challenge it.

Next, losing heart, I only looked into one claim about earthquakes, which gave me comfort by telling me that if they are caused by fracking, which is uncertain, they are minute and therefore inconsequential.

Finally, my head exploded when I ran across the quote below from one of California’s State Legislators in reference to a law that would potentially place a moratorium on fracking…

"What I'm trying to do is say to the oil companies, 'Look, if there's never been a problem with fracking, if it's safe, you need to prove that to the public,' " said Pavley, D-Agoura Hills (Los Angeles County).
See here on the impossibility of proving something will not harm you, and yet we keep making that demand.

Look, I have no doubt that fracking poses legitimate risks.  Also, I’m sure it is not nice to have a well in your back yard…but so far I have not bought into the idea that the downsides outweigh the potential benefit of reduced GHG’s.  The question is, have I come to this conclusion because I’m unable to resist confirming my existing biases, or is it objectively true…we’ll ask the experts next time.  So, what do you believe?




Tuesday, March 26, 2013

Science, well sort of…The experiment begins, on the topic of….


Well, I’ll tell you in a second.  Regular readers, and bless all 8 of you, will recall that I’ve taken on the task of exploring how one comes to a belief by conducting an experiment on myself  - right here, on this blog (background here). I’ve  picked a topic that is sciency and that I honestly don’t know much about and I’m going to document how I form my conclusions on it.  I guess the uber idea is to serve as a model of sorts, with the hoped for result of getting you to examine your own path to your beliefs as you see how I arrive at mine. When I announced this experiment, several of you suggested topics for me to examine.  I hated all of them, partly because I had already decided, but mainly because your ideas were far better than mine.  But my original idea stuck in my head, so I’m going with the topic of… fracking.

To start, I need to come clean about my overall biases. First I am generally skeptical about proclamations of absolute certainty on any topic.  So I’m assuming going in that my conclusion will be a nuanced one, with many shades of grey.  Second, I tend to dismiss sources that I deem to be purely ideologically motivated, both left and right.  But this can be a trap, because motivation does not necessarily make the claim factually wrong.  The problem with all biases is that we often unconsciously seek to confirm them by interpreting information to align with our preconceived notions.  So feel free to call me out if you see me erring.

In terms of the topic, the specific question I’m seeking to answer is whether fracking, and the resulting increase in the availability and use of natural gas, is on balance a ‘good thing’ as it relates to climate change. In other words, will fracking result in a meaningful reduction in GHG’s, and will the associated risks/costs be worth that reduction?  Easy one, right?

My Methodology
I thought I should set out my plan of how I’m going to go about this effort on the near non-existent chance that someone might seek to replicate it. First, you should know that I have been consciously avoiding reading or listening to anything on the topic of fracking since I picked it about a month ago. And quite frankly I had read little before then, so I truly am going into this pretty open.  My plan is for the next month to simply start reading everything that I run across on the topic.  This should be easy as my twitter feed and various news channels are replete with mentions of it.  But here is the first problem… I self-selected these sources, and I’m assuming the provided perspective will be a skewed one.  So to counter balance this I’ll also seek out other sources I might not otherwise stumble upon, and just see how it goes.  I’ll then report back on my preliminary conclusion and how I arrived at it.   And here’s where you come in. Over this next month feel free to point me to any data you think I should look at.  I’d particularly value sources that challenge the status quo, either pro or con.  I’ll include your suggestions in my search unless I judge them to be whacky.   My thinking is that this is how we generally come to conclusions about a topic, by just kind of drifting towards it with random inputs from various media, friends, etc.

After I report back on my initial conclusions, I intend to get serious, and actually seek out authoritative sources on both sides of the issue and ask them to make their case. Not yet sure who this will include, but I’m guessing the natural gas industry, various academics, and advocacy groups.  What fun.  Again I’ll ask for your suggestions.  I’ll give myself another month to absorb all this new information, see the impact on my beliefs and then report back again.

Finally, I’m going to go back and double check myself to see if I have allowed biases or other errors to creep in.  I’ll do this with the help of my friend Dr. Anthony Pratkanis who has spent a career researching belief formation and has a number if interesting strategies that will help in my self-assessment.  I mention Anthony by name in part to show you how serious I am about this, but mainly to impress you with the quality of my friends.  I’ll then issue my final conclusions…gulp.

So, what do you believe?

Wednesday, February 13, 2013

Science, well Sort of….blah, blah, blah, part 2


In my last post (here) I sought to lay out how I go about assessing scientifically based claims.  Running out of room I punted with a promise to come back with a  part 2…This will be quick, because I really want to move on to the next phase of this exploration….but before that,  when deciding what to believe, let’s be sure to:

Embrace Systemic Causation.


After Hurricane Sandy last summer the interweb lit up with hand wringing over whether the claim could justifiably be made that climate change was the ‘cause’ of the hurricane. Sciency sounding cases were made for both sides of the argument…and I was personally unconvinced/confused until I read this and was persuaded we were engaged in the wrong debate altogether.  In the article, Berkeley’s George Lakoff makes the case for “systemic causation”.  Simply put, some systems are too large or complex to be able to attribute direct causation.  Climate change causing extreme weather, smoking causing cancer, sex leading to HIV/AIDS, sugar’s role in obesity,  are some of many examples of systemic causation.  In each case we know from observation and research that while these are determinative factors, it is impossible to show direct causation in any single instance.  This is the case in almost all complex or emergent systems.  Note that Lakoff is not a physical scientist, and I’m sure this concept makes many of them squirm, but again that misses the point.  When we have to make a judgment informed by confusing and often conflicting data, we need to step back and look at the bigger picture rather than get tied up in superfluous debates about direct causation.

And there is another important aspect of systemic causation…which is to be on the lookout for when you don’t see evidence of it.  Classic examples here are supposed dangers caused by cell phone “radiation” and harmful GMO’s….In each case, there are massive amounts of exposure, or causes, but no observable effects.  If they were in fact harmful, we would expect to see evidence of systemic causation by now after decades of use…you may not like the point, but I’m sure you get it.

Next, be sure to:

Beware of Epistemic Closure.

Don’t be intimidated by the title…it simply means don’t allow yourself to be persuaded only by folks you violently agree with already.  The Conservative economist and policy wonk Bruce Bartlett wrote an excellent piece on this here. In talking about post-fact, post-science politics he notes, “This was my first exposure to what has been called “epistemic closure” among conservatives—living in their own bubble where nonsensical ideas circulate with no contradiction”.  There are of course many examples of this on the nominal political right, from creationism to climate denial …but before my progressive friends get too smug, note that many on the political left are circulating their own nonsensical ideas about the dangers of vaccination,  and EMF emitting devices or the healing powers of homeopathy. Anyone can fall prey to this.  In fact, to varying degrees, we all do. So my best suggestion is to “friend” and “follow” folks you disagree with, read blogs and magazines that offer different perspectives, and generally seek out smart folks who you don’t normally listen to…Simply, push yourself out of your comfort zone and self-created filter bubble.

And finally:

Accept the Limits of Science.

This one is at once simple, and agonizingly complex.  The simple part is grounded in understanding what science cannot do.  It can never provide absolute certainty.  It is not set up to “prove” things with finality, but rather to generate ever more questions and lines of inquiry. Further, it cannot prove something will not happen.  The best example is it cannot prove something cannot harm you.  It can show that it likely will or likely won’t, to various degrees, but is never absolutely definitive. (...go for it, cite me an example where I’m wrong on this).   And perhaps most importantly, science is never “settled”.  Each discovery, revelation and explanation simply leads to new avenues of research ….it is never ending.

And this is where the agony comes in…we really, really don’t like it this way.  We look to science for answers, assurance and proof.  We are frustrated and confused by the noise coming in from both sides of every debate, drowned by seemingly conflicting data, and we are often simply unable to understand the jargon employed…How do we figure out what to believe when even the scientific experts seem to disagree, or we simply can’t understand them?…Well, once again we've come full circle.   Which leads me to my brilliant new idea.

I’m going to conduct...

A Science Experiment.

I’ll be the test subject, and you will be the scientist observing the experiment, and to make it easier for you, I’ll even take the notes. So the experiment will be that I will select a topic currently being debated in the public sphere that has a basis in science.  It’s a topic that I frankly have not taken the time to understand, and therefore I really don’t know what to believe about it.  You’ll observe me on this journey as I decide what to believe, with the idea that we both might learn something, both on the specific topic and on the nature of beliefs. So, the topic I have selected is…..no, I think I’ll make you wait until next time…(insert your favorite wry smile emoticon here).

So, what do you believe?

Wednesday, January 2, 2013

Science, well sort of...me forcing me to answer my own question


In one of my recent posts I had some fun with the topic “…the six things I want our kids to know about science … of course there are more, but it was a good start.  Among the comments I received on the post, one from a friend posed a troubling question, which could be restated as, “OK wise guy, how DO we help our kids figure out what to believe with all this seemingly conflicting and confusing sciency stuff?”  In re-reading my rants on this subject I realize that while I have done a passable job of laying out the challenge of figuring out how to decide what to believe, I’ve done a crap job in providing any answers to the question how.  This led to some rapid self- reflection, asking myself the question, “OK wise guy, how do YOU figure out what to believe with all this seemingly conflicting and confusing sciency stuff?”  …fie on self-reflection. But the effort did allow me to see that I do have a bit of method to my madness, outlined here.

My first step in assessing the validity of a claim is pretty much always the same… I take a really, really close look at the source. I feel this is the best place to start, and while taking a bit of time and effort it can often yield immediate results. If the source does not pass the smell test, then move on.  This exercise breaks down into two broad categories, qualification and motivation.

Part one: Assess if the source is qualified to make the claim

For me, this one is pretty straight forward... Do they have the expertise, track record and just plain legitimacy to make claims? If I don’t immediately recognize the source of a claim, such as a major university, research institute, etc, a quick internet check can be very revealing.  A couple of my favorite examples here are when I Google mapped the location of a very sciency sounding institute that was putting out climate change denial lies, and it turns out they are housed in a small out-building on a dirt road in rural Oregon; or when a legitimate sounding, oft quoted source on the danger of GMOs turned out to be a group of osteopaths in Kansas who did no research at all, but just passed along bogus information.  I’ve done these searches many times and it’s really amazing how much you can learn about the sources of the nonsense that gets put out, and then picked up, by the media, bloggers, interest groups or your Facebook friends.  You don’t have to be a scientist to figure this out…just consider the source and use your judgment.

BONUS Tactic - If you still have lingering doubts about a source, look into how they get their funding, who is on their Board of Directors and, if they are a nonprofit, have a quick look at their tax returns (not hard, go here http://www.guidestar.org) … lots of insight to be gained doing this.

Part Two: Assess the motivation of the source making the claim
This one seems straight forward, but you have to be careful. When examining the motivation of a source, it is easy to fall into the trap of, “Well, of course they would say that, it is in their self-interest”.  Self-interest can take many forms, such as a financial stake in the outcome, academic rewards, pressure to conform to an ideological perspective and just plain status/ego/hubris.  The tricky problem here though is that many perfectly valid sources have self-interest in the claims they make, or at least can be accused of having so.  Therefore, self-interest should never be an immediate disqualification of the validity of a claim.  But it does play a role, and needs to be viewed in the context of the other factors.  In the recent effort to label GMOs in California, the claims made by the large food industry were attacked in part for their self-interested motivation to maintain the status quo…fair enough.  But you had to also understand that many pro labeling folks also had significant self-interest at stake, in this case the growth of non GMO food markets. So yes, once again you’ll have to exercise some judgment, and weigh all the factors.  My next stop is the data itself.

This is probably the hardest part for us nonscientists, because if you ever try to look at the actual data underlying any claim, unless you are an expert in the field, you quickly realize that you really don’t fully understand what is being presented…in fact, that’s why we rely on trusted sources to interpret and explain the meaning of the data. So my approach is to assess the preponderance and longevity of the data from qualified sources supporting the claim.  Examples…the data to support the claims of human caused climate change is overwhelming and longstanding, while that to support the risks of GMOs is essentially nonexistent.  I could go on, but the point is that we need to weigh a number of factors in assessing claims.  Sadly, there is no easy or simple approach, but it’s certainly worth the effort.

Yikes, I’ve reached my self-imposed word limit, having no doubt lost most readers already (…sorry gang).   I’ll close for now, but to keep you on the edge of your seats, next time I’ll weave in systemic causation, epistemic closure and the limits of science on how they factor in to our beliefs…consider this part one of two…nothing but wacky fun on this blog… [Sic].

So, what do you believe?

Wednesday, October 31, 2012

Science, well sort of….my dog ate my GMO’s!


OK…Imagine this scenario…there is an issue that is being debated in the public sphere that is heavily informed by science.  But within the scientific community there is little real debate and in fact there is a broad, overwhelming consensus.  All leading scientific organizations, national academies around the world, and international agencies agree.  But there is a small group of folks who question or deny the science….and their influence on the policy debate is disproportionate to their numbers.  They may be at times motivated by economic interest, but almost always by an adherence to ideology over scientific data.  They utilize long debunked but well-worn methods in furthering their cause, such as cherry picking data to skew results, impugning the motivation of the scientists and using fear as a weapon in their fight. They ask science to provide what it cannot, absolute certainty, and cite this failure in their cause. Many are veterans of previous campaigns.

You’d be forgiven if you thought this was a summary of the battle lines in the climate change debate…but that’s not the issue I’m describing here today..... sorry folks…this is about the debate around GMO’s.  I’ve consciously not weighed in on this one to date (ugh, which would have meant reading a whole bunch of sciencey stuff…who has the time these days?), but I can’t sit on the sidelines any longer.  And while there are a host of battle lines in this issue as well, today I’m going to focus on the debate around food labeling as embodied in California’s Proposition 37.

I’ll start by saying I’m honestly not trying to sway the opinions of the firmly decided.  Many have staked out their positions on both sides of this debate, and I can appreciate their perspectives.  Nor am I going re-litigate the whole GMO debate in this limited space. It is, however, my objective to share my thought process on how I have come to the conclusion that I will be voting “no” on Prop 37.

First, it claims to be simply a right to know issue, as in “we have a right to know what is in our food.”  What could possibly be wrong with that…well a few things.  Implicit in the argument for the “right” to know is a “need” to know, that this information will somehow benefit or protect the consumer.  Here comes the pesky science… the simple fact is that after decades of both laboratory (experiments to see if this stuff is bad) and real world (billions of people and animals eating billions of tons of GMO’s) results, there has been no data to show this stuff is bad for us. Now, the use of GMO’s may in fact lead to other consequences we might wish to debate, such as the value of large agri-business over local organic farms, the use of pesticides, etc.  But here, too, when we look at the data, we get a mixed bag of results.  While some GMO crops lead to more pesticides, others lead to less.  Many are drought resistant which, in a rapidly changing climate, is a good thing.  And while I love and eat almost exclusively organic foods, I can afford to, and I’m not yet convinced we can feed the world’s population using only organic methods.  So for me, and the folks at the National Academies of Science, the European Commission Directorate-General for Research and Innovation, the AMA, and the Royal Society of Medicine to name just a few, there is no scientifically based “need” for this labeling.

But wait, you say, all those scientists have been wrong in the past…shouldn’t we play it safe, just in case?  I appreciate how attractive and benign the use of the precautionary principle feels here.  But my concern is that the real intent of this proposition is to slow or completely stop the use of GMO’s.  As I’ve said, I believe the consequences of that are potentially far more detrimental than some minute and as yet unproven risk, so I’m drawing my line in the sand here.

Other problems with Prop 37 for me include that even if we stipulate that the theoretical risk of GMO’s does constitute a “need” for labeling, how is it that the proposition excludes meat and dairy producers, as well as restaurants from labeling? This just makes no sense to me, and leads me to question the judgments of those behind this initiative (…yup, I do that too).

Finally, I feel it is very important for all of us, if we are to win the larger debates around public policy as impacted by science, that we are consistent in our approach to the science underlying those debates.  If by default we pick and choose our “science” based on our ideology, what our friends say or some blog on the internet, how can we effectively stand up to other science denial around issues such as climate change and evolution.  And perhaps most importantly, our kids are watching us…they have finely tuned BS meters that can ferret out our inconsistencies…how do we arm them for their future, and embolden them to think critically,  if we ourselves don’t follow the course we wish for them.

So, what do you believe?

Friday, October 5, 2012

Reflections: Integration of new technology in both formal and informal educational settings


This past year I had the opportunity to sit on the California State Superintendent of Education’s Education Technology Taskforce.  Comprised of primarily educators and school administrators ( I was an outlier), we had the charge of providing Superintendent Torlakson with a series of strategic recommendations that would help shape his California Education Technology Blueprint; essentially a plan for how to transition, if not transform education in the era of modern technology.  Our report can be found here: California State Superintendent of Education’s Education Technology Taskforce Report.

Some fascinating facts to set the context for our work…currently, it can take up to six years for the State to adopt a new textbook into the approved curriculum.  Technologies are born, mature and then die within that timeframe.   A newly introduced text today would not even mention the IPhone, let alone Twitter or the whole App phenomenon. How can a traditional textbook keep up with this pace?  Second, while most students, and nearly all by the time they reach high school, are digitally savvy and connected, utilizing and indeed developing new ways to integrate technology into their everyday lives, they are required to turn their devices off in school.  So one of the most powerful tools for communication, creativity, information and learning is shut off by policy in the very setting it could and should be most useful.  Finally, instruction continues to be measured and indeed funded by formulas that value hours of time students are sitting in the classroom rather than the quality of the learning.

Clearly some daunting challenges…  Combine these with reduced resources, pockets of resistance to change from every corner (teachers, school boards, administrators, textbook publishers, etc.), and an ever changing playing field, more and more at an accelerating pace, one can appreciate the depth and breadth of the challenge for formal education.

And while I encourage you to read our recommendations, and indeed take the opportunity to engage in the process of transformation, for the purposes of our field I think there are some interesting lessons and parallels from these challenges that we should be paying attention to.

First, there needs to be the simple recognition of the fact that the world outside is moving at a pace of change and innovation that our institutions are rarely able to adequately adapt to.  I’ll use some recent work here at Chabot Space and Science Center as an example.  In conjunction with our Bill Nye’s Climate Lab, we developed a highly engaging interactive website designed to connect and integrate the visitor experience with the Climate Lab.  We used an award winning design firm and indeed created a rich and wonderful site…in fact we were nominated for a Webby for our work….One problem…at the time we started the development of the site, the only robust option for the integration of video into the content (and we had lots of it) was to use Adobe Flash.   By the time it was launched, the IPhone and IPad were well on their way towards market dominance, and Apple had made the decision to not support Flash…oops. 

So back to the drawing board, we have decided to abandon the site, and migrate the entire online experience to a mobile game format that will be available across all platforms…but here again, even during the time of development, IOS 6 is launched and Amazon comes out with the Kindle Fire.   We’ll be able to deal with this, but the point is, what will happen 6 months after we launch…after one year? Look around your institution…how many cool digital exhibits or interactives look dated or downright ancient, at least by modern tech standards.  The point is, I feel we need to seriously rethink how we go about integrating technology into our exhibit development cycles.   One approach is to figure out how to best use our visitor’s devices, rather than trying to impose our judgment on which platform will best serve the user…unless we do so, my feeling is that we’ll be wrong more often than we’ll be right. 

Another point from the task force is that in formal education we need to ensure that there is a connection with learning and the real world.  A short hand way of thinking about this is moving from theory to practice or applicability.  A simple example might be that rather than having lectures on chemistry, have the student work in a lab or a brewery to see and experience the application of chemistry in the real world…Beer!  For our field, I feel that too often we do a great job of laying out the theory, and even compelling examples of it, yet rarely connect back out to current applicability.  The challenge here is that our examples are often static, fixed in time and place (and yes, even if they are “digital”), while the real world is dynamic.  Again, tough to keep up, yet that’s what is expected of us in today’s world.

Finally, another principle from the taskforce that I think has some applicability for us is that learning should occur “any time, any place and at any pace”.  This speaks to the point that learning can, should and does take place at times other than sitting in the class listening to a lecture.  In fact, many argue that little real learning occurs in such a setting.  Yet like the classroom with its Victorian era constructs, we too often require the museum visitor to take us on our terms rather than meeting them on theirs.  I feel that long term this is not sustainable.  Like every other content provider (look what’s happening in journalism, television, music and yes, text book publishing) if we do not actively participate in our own creative destruction, we will become the victims of its outcomes rather than the master.  

Tuesday, September 11, 2012

Science, well sort of...the 6 things I want our kids to know about science


As I write about science, how it’s understood and its impact, I often get caught in the weeds of one issue or another…but the more I look at this, the more I’ve come to believe that we all need to back away a bit, and look at science as a meta issue (not really sure what that means, but it sounds good).  And frankly, this will be lost on most of you reading this because you’ve already solidified your views on both the meaning and implications of science.  So that’s why I’m focusing on our kids…here are Uncle Alex’s 6 rules to know about science…you are not allowed to play science before you commit these to memory.

1. Improperly using words that start with “C” can get you into trouble
I’m speaking of course about causation, correlation and certainty.   Causation is something that happens because of something else, and correlation is something that happens next to something else.  The significance of the distinction is if you know what causes something else, you can change the outcome, like when we understand what causes diseases; But if it only correlates to something, not so much.  Pretty straight forward on the face of it, but the misunderstanding of the distinction between the two, and the nominal desire for certainty leads to endless endlessness.  A great example is the claim, “smoking causes cancer”.  Well, yes it does, but darn, not always.  So is less than 100% causation only a correlation…again, not really.  It’s those pesky variables such as genetics, amount and length of smoking, etc…Further, to figure out when something is causation or correlation does not follow a simple black and white rule.  Therefore, we need to look at the bigger picture…here for instance we have decided that smoking causes cancer and other health effects sufficiently to warrant social and political action to try to limit smoking, which is bad for people, bad for health care costs, etc.  So as individuals and as a society we have an interest in accepting the results of the science, even though it is not absolute and determinative.  My dear old grandmother smoked filter less Pall Malls until she was 86, but that does not justify changing efforts to reduce smoking.
As for certainty, well science simply can’t provide it. In fact, rather than seeking certainty, science seeks to constantly test and question previous assumptions of fact.  And while we think we desire certainty, we really don’t need it in nearly all cases…this tends to really bum people out sometimes.

2. All science is not the same, nor are all scientists
This is a two parter that leads to lots of confusion when trying to figure out what to believe.  Part one is about science itself.  We hear daily about this study or that which seems to conflict with other previous studies.  How could this be? Lots of reasons…the variables or testing conditions were slightly different, inadequate sampling methods, spurious data, miss calibrated instruments, stoned grad students…and the list goes on.  The point is this is tricky stuff and we should never read all results as equal.  And this is even more the case when the word “social” precedes science.  The second part goes to the scientists themselves.  Frankly, just because someone has a PhD in a discipline does not mean they are able or qualified to opine on topics outside their very narrow expertise.  Nor does a graduate degree confer objectivity, lack of bias, or ideological purity.  Heck, they may not even be decent scientists, so be careful kids.

3. It’s impossible to prove that something won’t happen
This one is closely linked to the fact that science can never provide absolute certainty.   In a nutshell, while science is excellent (but not perfect) at predicting what will happen, it is unable to prove something will not happen.  For example, science cannot prove that something cannot harm you, it can only predict that it might…This one is a bit of a mind bender, but always be suspicious when folks demand proof that something is safe…that proof cannot be supplied by science, period.

4. The “Ant Colony Problem”
Science is by its nature reductionist, taking various elements of complex systems and testing hypotheses about them piece by piece…however, this may or may not tell us meaningful things about the systems as a whole.  My favorite example of this is ant colonies.  The fundamental unit of the colony is the ant.  However, no matter how much we study any individual ant, how much science we throw at it, it will never be able to tell us how the colonies function as a whole.  Therefore, we need to be really careful about taking narrow results and using them to explain complex systems.

5. Science on the way to or from church
Science is not the opposite of faith, religion, spirituality or whatever term your parents are comfortable using.  However, a key conflict between the two does exist.  While science can never proclaim certainty, faith often does.  Therefore, scientific thinking can be perceived as threatening simply because it requires an openness to revise thinking base on new data and experimental outcomes, as opposed to faith, which is often held has certain, absolute and immutable.  So it’s not that science provides alternate answers, but rather that any answer must remain open to further examination and revision.
Science is glorious, and helps us understand the world and our place in it.  But it will never provide all the answers, only more data from which we are challenged to arrive at broader conclusions and which will always require further research.

6.  …and just to mess with your young minds
There are many unknown things… there may be unknowable things…it is unknown whether there are unknowable things.  (Credit to my good friend Leonard Tramiel for this one…not sure if he made it up, or like me, stole it)
Now go out and goof off….you’ll probably learn something important in doing so.

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Link for earlier blogs on ...the Science...well sort of:  http://www.chabotspace.org/open-science.htm