Thursday, April 07, 2011

Awe


I've posted this before but I just felt like posting it again today.

Tuesday, April 05, 2011

The Boy Who Cried Wolf

Last night Atlanta had some pretty rough storms roll through town. High winds, rain, hail, and lightning made quite a mess outside. My 11 mile commute to work had four detours from roads blocked by trees, utility lines and debris. About half of the neighborhoods I drove through were pitch black because they had no power.

The FM DJs on the station I was listening to were being pretty factual about their reporting. They were just stating the facts. Roads x, y, and z are blocked. Power out in x, y and z areas of town. But when I get in to work a coworker is complaining about how bad the am stations were reporting the storm. In his short commute he heard the aftermath compared to a “war zone” several times. Really? A war zone? Really? Were they bodies in the streets? Gunfire? Burning buildings? Sure there were trees down and leaves and crap spread everywhere, but a war zone? Come on. I remember as a kid being told the story of the boy who cried wolf. Apparently some people need a refresher course.

The boy who cried wolf caused the public to ignore his pleas. He had changed the definition of the word “wolf”. It no longer meant the same thing and was now something that could be ignored. Same goes for calling the storm damage a “war zone”.

A few years ago a gas pipeline blew up in California and completely blew up or burned an entire subdivision. I did not criticize anybody for saying that looked like a “war zone”. Now, if something like that were to happen today in Georgia what words are left to describe it? “War zone” now just means limbs and stuff spread around. You have diluted the words and they no longer have their original meaning.

It hit me today that the problem I have with this type of exaggeration is the same problem I have with the political inflammatory rhetoric. Suppose a real Socialist, a real Nazi, or a real Fascist were to run for election. What words are you left with to describe them? The past few years people have been throwing the words around without understanding that they are diluting the meaning. The three term are used as synonyms, they aren’t, and they are all used to mean “anybody who wants to control something I don’t want them to”.

Perhaps we could all benefit from asking an elementary school kid to retell us the story of the boy who cried wolf. Remember the moral to that story? He used scary words when there really wasn’t anything to be afraid of and people stopped listening and stopped caring when the real wolf showed up.

Thursday, March 31, 2011

Proofiness

Years ago I my dad had a book laying around the house called How to Lie with Statistics. The book took the form of a how-to book. The entire premise being that people don’t really understand statistics or even math very well so it presented some tongue in cheek suggestions on how to spin your numbers to say something that they don’t really. The book was intended to be used as a defensive tool to teach the readers how to notice when somebody else is lying to them with numbers.

If How to Lie with Statistics was the 101 course then Proofiness: The Dark Arts of Mathematical Deception by Charles Seife is the masters level course. If you are uncomfortable with uncertainty you might want to avoid this book. Seife successfully shows that many of the numbers that control our lives are at best gross estimations and at worst deliberate fictions. Instead of saying "Hey there are a bunch of Communists in the Justice Department.” Joseph McCarthy knew that we would give more credence to a number so he made one up, 205. Where did he get that number? He just made it up. And people bought it. Seife shows that people tend to believe numbers even if there is no reasonable expectation that the number is even correct. This reminds me of the story of the surveyors who were measuring Mount Everest and found out that it was exactly 29,000’. The supervisors in charge altered the data because 29,000’ looked like and estimate so they added a few feet to the mountain and called it 29,029’.

Seife shows how pervasive our trust of numbers are in everyday life. Most people accept that 98.6F is the normal temperature for a human. Is this number really accurate to one decimal point? No it isn’t. The doctors who determined the average normal temperature for humans only claimed it was accurate to the decimal point in Celsius and even then it could vary by person. 37C is the normal temperature, but when you convert that to Fahrenheit you get a number that appears more accurate than the number you started with. The real average temperature for humans is somewhere between 36C and 38C or 97F to 100F but we really can’t be more accurate than that. Yet how many times have you assumed that you had a fever at 99.0F? Not to say you weren’t really sick, but you don’t need the artificially accurate number to tell you that. This is Proofiness.

Seife explains case by case how proofiness has been used to free the guilt; O.J. Simpson, execute the innocent, elect Presidents and Congressmen, justify military action, justify backing out of arms treaties, support just about every type of legislation on both sides of the aisle on issues ranging form abortion to gun control etc. etc. etc. The abuses of math in our society were very disheartening. Personally I think Seife had his own bias as to which side of the aisle was more guilty of proofiness than the other. That being said he was just as thorough in his rebuke of the right as he was the left.

Many parts of the book were quite depressing. The specific cases, especially those were lives were lost seriously caused me to question the motives of some of our elected official. However, overall I thought the book was an excellent primer on what to look for and what follow up questions to ask when you are given information, especially information that involves counting , math and statistics.

The whole time I was reading this book I keep thinking about this one joke. 5/4th of American’s have problems with fractions. Seife has convinced me that this number may even be higher.

Thursday, March 03, 2011

The Panic Virus

When Seth Mnookin and his wife found out they were expecting their first child they got all sorts of unsolicited advice form friends and family about vaccines and their safety. He decided to investigate for his personal reasons and in the process felt it would be an intriguing topic for a book. In an interview he stated that his original intent was to just present the controversy. However, after finding that all of the evidence was on one side he turned the book into an expose’ on those that preach fear at the expense of logic, evidence and children’s safety. The Panic Virus is that book.

The anti-vaccination groups out there are really good at getting you to ignore the logic and the lack of evidence. They focus on a few heart breaking stories of kids who were diagnosed with autism at roughly the same time they were vaccinated and then try to get use to connect the dots and link the two. The stories are truly heart-breaking but no matter how sad they are that doesn’t prove that the vaccines caused these kids’ conditions. What makes Mnookin’s book stand out over the many others out there is that he fights fire with fire. Rather than just focus on the statistical and epidemiological evidence that shows absolutely no casual link with vaccines, Thimerosal or mercury; Mnookin bests the antivaxers at their own game. He tells much more emotional stories of children being crippled or dying of Polio, Pertussis and Measles because they were not vaccinated. Jenny McCarthy has stated that she is just fine with this kind of collateral damage.

The Panic Virus is a brilliant and timely history about the manufactured controversy about vaccine safety. From the initial Lancet report all the way to Dr. Wakefield’s complete and thorough discreditation, Mnookin shows that vaccines are safe and effective and do not cause autism.

My only criticism of the book is the same that I’ve had with others too. I have become so familiar with this topic that I was waiting for him to tell me something new. I‘ve grown used to reading articles daily on autism and vaccines. I have news aggregators send me any story with the word Andrew Wakefield in the body. But I had to take a step back and look at the book from the perspective of somebody not as familiar as I was. It is a great resource.

I encourage anybody who has an questions at all about the safety of vaccines to please read this before you hesitate to vaccinate your children. You should be convinced by the evidence that getting vaccinated is much safer than not vaccinated. And if that’s not enough the evidence of fraud, shoddy research, dishonesty, conflict of interest and foul play by the anti-vaccination community should sway you the rest of the way. And if there is still any doubt left in your mind the heart-breaking stories of children dying from easily preventable illness should completely tip the scales.

Monday, February 28, 2011

Semantics

A few years ago I was having a theological discussion with a friend of mine. He was really impressed that the English word son and sun were homophones. It really appealed to him that Christ, the son, brought light into the world and Sol, the sun, also brought light to the world. Now I realize that this wasn’t the format for textual criticism so I just bit my tongue. I was tempted to point out that the significance of his revelation only applied to English. I didn’t know for sure but I was pretty sure that son and sun were not homophones in the original Greek or Hebrew. If this doctrine were so profound why would it be left for only those who spoke English to understand? But it wasn’t my job to take the air out of his sails. So, I just listened patiently and encouraged him to continue his studies.

Yesterday at church I had a similar tongue-biting experience. In Sunday School we were discussing the New Testament and somehow we started talking about the words thee, thou and thine. For quite a while we talked about the importance of using these words when we are talking about deity. Begin tongue biting. Personally I think this type of language says more about England at the time King James version was translated than it does about anything contemporary to Jesus. But I continued to listen.

Then the discussion centered on the fact that thee, thou and thine were more familiar and casual forms of the more formal pronouns for you and your. More tongue biting. One member of the audience even challenged that claim, saying that the instructor had it backwards. Thee was the more formal not you. But he stood his ground and correctly stuck to his point that thee was the familiar form and you the formal.

Then two other members of the class shared personal experiences about the formal and familiar tenses in different languages. And how when they learned the different language they were trained to use the familiar forms when referencing deity, in Spanish and Portuguese just like King James’s contemporaries did with English.

One good thing about have a wife that is so understanding of my condition is that I can quietly vent a little bit to her rather that completely sever my tongue. So I asked her, “Does anybody here know if the original Greek or Hebrew had rank distinctions like Old English, Spanish or Portuguese?” My point was the same as my point to my friend a few years ago. If we were to be having this lesson in the language the original text was written in would there be a distinction at all? It was my suspicion that we were spending valuable lesson time discussion the particulars of doctrine on a subject that quite possibly was just an artifact of translation. Until somebody could verify that Greek and Hebrew had rank distinctions in their pronouns we were just wasting time.

So once I got home I turned to the interwebs and the Google helped me answer my questions in only a few minutes. The instructor was correct. Thou, thee and thine are the familiar form and not the causal form.

“Following a process found in other Indo-European languages, thou was later used to express intimacy, familiarity, or even disrespect, while another pronoun, you, the oblique/objective form of ye, was used for formal circumstances.”

And, as I suspected, Greek and Hebrew do not even have rank distinctions in their pronouns.

“Emphasis in biblical languages was on the noun, subject, or name, whether referring to God, man, a spiritual being, or an inanimate object. There were not two or three sets of pronouns used: for example, one to convey the significance of God's name and another when referring to Abraham. Hebrew and Greek do have pronouns that distinguish between singular and plural and between subject pronouns (referring to the one performing the action of the verb); and object pronouns (the one receiving the action of the verb or joined with a preposition); but they are used without any reference to rank. In Biblical Hebrew and Greek pronouns were a matter of precision not piety.”

I guess what concerns me about issues like this is that it distracts from time that we could be using to discuss truly important things. Rather than talking about how we can help other in the congregation we were nit-picking over our choice of pronouns.

As soon as church was over we loaded up the truck and headed up to visit my new nephew and his parents. He’s still in the NICU since he was born rather small. It was inspiring to see this tiny little soul struggling to survive and seeing his parents do everything they can to help him get started right in this world in spite of his bumpy landing. I really enjoyed the time spent with him, his parents, and the nurses showing him so much love in his first week of life. The drive home gave me pause and really got me thinking about what it means to be spiritual.

Wednesday, February 09, 2011

Internets Polls and other Cons

The book I’m currently reading has a whole chapter on opinion polls. Specifically, it focuses on how systematic errors in the polls can cause error bars so broad that the data is completely worthless. Unless your goal in the first place isn’t to measure public opinion but to shape it, then they aren’t worthless at all.
Yesterday on my facebook feeds I got a request to answer a survey about where I get my news. Sounds good on the surface, but then the problems start popping up.
What’s wrong with this kind of a survey? Well first off, it’s voluntary. They aren’t gonna get any mediocre opinions. People don’t log on to a volunteer survey to say that they really don’t have an opinion. So right off the bat the survey will be artificially polarized, since it will only take responses from people passionate enough to participate.
Second, I didn’t see this same survey come across any other media; radio, TV etc. This isn’t a problem by itself. They may have been specifically looking for the opinions of facebook users. It’s only a problem if they then try to extrapolate from there out to the general population. Many surveys often do exactly that.
But the big death nail in this survey’s credibility is the surveyed audience. This came across my NPR feed. Yup, this survey was only sent out to people who are already self declared fans of NPR. Are you kidding me? You’re taking a survey of people who are already fans of NPR and want to know where they get their news? Gee, I wonder how that will turn out.
Of course this is nothing new. Fox news can’t seem to go a whole hour without asking you to log in and tell them what you think. Then they come back with some ridiculous misinterpretation of the data like, “55% of Americans think Obama is Muslim.” As if the opinions of their viewers makes it reality. I’ve grown to expect this kind of meaningless polling from most news outlets. I was just a little bit surprised the see if from NPR. In fairness to them, I don’t think they were being partisan. They were just trying to create a poll that disproportionately favored NPR itself.
So If you’re ever around me when somebody tells me about a recent poll, you’re liable to hear sigh or a snicker and then a series of follow up questions about things like statistical errors v systematic errors, controlling for sample bias, error bars, etc. You see polls themselves aren’t news. At best, they are what news organizations talk about while they are waiting for real news to happen. At worst they are an attempt to manipulate opinion or politics.

Tuesday, February 01, 2011

Hypocrisy

It snowed in the Southeast a few weeks ago. Since Atlanta has no appreciable snow response plan other than to just wait for it to melt, most of Atlanta was stuck at home burning vacation days as fast as they were their Kroger bought firewood. Nothing pulls out the deniers of Global Warming more than a colder than average day. Never mind the fact that most of them were conveniently silent during the records highs of only a few months ago, 87 degrees on October 11th and I didn’t hear a peep out of any of them Saturday and Sunday when it was in the 70s. I could do a whole post on confirmation bias here. If you only look at the data that supports your conclusion and ignore the rest the world looks just like you imagine it would. But I’ve done that before.
Of course a few hot days in October or a few days in the 70s in January don’t prove it is happening any more than a few cold days in January proves it isn’t. If you are talking about a global issue increasing over the long term you have to average all of the data for the long term.
My post today is to issue a challenge to those who honestly believe that a few cold days mean that the general trend is not increasing. Let’s put your money where your mouth is. Do you believe the same thing about your stock portfolio? I propose that we take all the stocks in your portfolio and every time one hits a localized low you sell it to me at that low price. If we apply the same logic to your portfolio that you apply to the weather then a localized low must mean that the general trend is not increasing. So why would you want to hang on to it anyway?
Any takers? No I didn’t think so. Because most people are smart enough to realize that when it comes to their stock portfolio it’s the long term trends that are important not the localized highs and lows. Sure there are bad stocks out there that are not performing well. But if you look at all of them all and average them out, it’s still a pretty good place to invest. Why, because in spite of localized events the trend is generally increasing.
I think that most people who deny the evidence of global climate change are smart enough to realize this point. They obviously accept the same logic when applied to their portfolio. They just choose to deny it because they don’t like the political implications that accepting the evidence would have. And they know that a cold day in January doesn’t prove anything except that it’s a cold day in January, yet they deliberately play on the emotions of those that follow them to lead you to a fallacious conclusion. They think their listeners are that easily manipulated. Unfortunately, many of them are.

Tuesday, January 25, 2011

Trust

Every now and then I like to watch the Barrett-Jackson auto actions. I’m never going to be able to afford any of the cars they sell but I still enjoy looking at beautiful cars. Week after week people will show all sorts of cars and the commentators will give you explanations of what kind of restorations the car has been through, the history of the car and even focus on some of the details that may be either custom or were specific to that year and model. I don’t pretend to be an expert on any of the cars they show. I can guess the decade of most cars and on a few I might be able to get a little bit more detailed, but not much. The only possible exception to this would be air-cooled Volkswagens. I’m still not an expert by any stretch of the imagination, but I know more about them than any other make.

Well a few months ago they did a show that had quite a few classic VWs come across. I missed the show but I read quite a bit about it on a VW chat room that I visit frequently. From the discussions in the chat room it became quickly apparent that the commentators just had no clue what they were talking about when it came to the VWs. But that didn’t stop them from repeating nonsense with the same confidence that they did with other cars.

Now I don’t fault anybody for not being completely familiar with the brand that I choose to take particular interest in. People like different things and I’m completely OK with that. What bothers me is something different. Up until know I had taken them at their word that they knew what they were talking about. It is clear that at least in one category they were clueless. Sure the guys talking were probably just the talking heads recycling the facts that somebody was telling them about in their ear bud, but up until now I had trusted them. And the confidence with which they gave the facts was partially to blame for my lack of skepticism.

The show has been somewhat disillusioning since then. How do I know if what they are telling me about the Mustang currently on the block is true? Considering how much hogwash they dished out when it was the VWs up there, how do I know? Up until now they had my trust, but now I find myself asking questions. How much of this do they really know? How much are they just making up out of whole cloth and hoping that nobody will call them on it? I still watch the show periodically. The cars are no less amazing. I just have to take the narrations with more than a few grains of salt.

I had a similar event happen recently. A friend was telling a story about another subject that I know quite a lot about. In telling his story he messed up a few of the details with which I am familiar. I can look at the point of his story and his overall point is unaffected by the slight deviations. That being the case I found myself analyzing every detail. If he got that wrong, what else is not quite the way he told it?

As always when these things happen to me I get introspective rather quickly. Do I do this too? How many times have I embellished what I considered to be a minor detail? Have I sacrificed somebody’s trust in me just to tell a little bit better story? Am I doing it right now? Perhaps I need to take better care to be sure that I’m not guilty of the very same thing that I find disillusioning in others.

Sunday, January 23, 2011

Totally Looks Like...

So there is this website where people post pictures of two things that look similar called totallylookslike and a few weeks ago a friend had an experience where he found two book covers that looked really similar. Well the same thing happened to me last night. I was in bed Reading Proofiness by Charles Seife and Victoria comes up stairs and puts her book on the nightstand next to mine, Slights of Mind by Stephen L. Macknik. You be the judge.

Friday, January 07, 2011

Memories



Although the numbers are little off in the third verse this song always reminds me of my folks.