Archive for the ‘critical thinking’ Category.
Left at the Red Light
If you’ve ever asked for directions in Georgia it is very likely that you have been told at least once to “turn left at the red light”. I used to respond by saying something to the effect of, “How about I stop and wait until it turns green and then turn left?” This usually is met with a puzzled look on their face, as if they don’t even realize that they had encouraged me to break the law and potentially risk my life. You see in the south when you ask for directions the term “red light” actually means the next intersection with a traffic signal no matter what color it happens to be showing when you get there. I’ve learned to just enjoy this little colloquialism. I don’t bring it up to criticize well-meaning people who are just trying to help out, but I do get a little chuckle when I hear it.Yesterday a friend showed me this story. This lady took the advice of Google Maps at the expense of her own common sense. She got hurt. And now she thinks it’s Google’s fault? I’d be willing to bet that this same person would “turn left at the red light” and then insist that it was the well-meaning guy at the Citgo’s fault for using a southern colloquialism that got her hurt.
It really amazes me how frequently people completely turn off thier brain and then think it's somebody else's fault.
Martin Gardner
When I was about 10 or 12 I went to my Dad’s office with him at CDC. He had to work on a project and I thought it was cool to hang out at his office in a real laboratory. I have a feeling that I was a lot like Noah an I was probably asking him far too many questions. Rather than just shut me out completely he looked for something that would keep my interest and yet still allow him to have an independent thought. He had a book on his desk that he handed me to read while I waited for him to finish his project.The book was Aha Gotcha by Martin Gardner. It was a really fun read about several mathematical paradoxes and logical fallacies. Gardner used some very simple stick figures to illustrate each problem. This made it very appealing for a geeky little boy. The science was very deep but the cartoons made it fun to read.
This book was my first introduction to the concept of critical thinking. I frequently fall back on the lessons I learned by reading it. Gardner teaches us to not accept things at face value and look a little deeper into the problem and try to find the real solution and not just the paradox that you first perceive. I get a little chuckle when I see a magic trick and realize that I know the core of trick thanks to Gardner.
I was saddened by the news that Martin Gardner had died this weekend. I need to be sure that I do my part to make sure his legacy lives on. Yesterday I pulled my dad’s copy of Aha Gotcha off the shelf and thumbed through it. I’m gonna make a point to share it with my kids tonight.
Dad, Can we listen to another one of those “I’m Brian Dunning” programs?
I don’t remember what exactly prompted it, but Sunday evening we were on the way home from my mom’s house and the kids got started talking about evolution. At some point one of the younger two said that we evolved from monkeys. Then they got into a debate over whether it was monkeys or apes. I had to interject and tell them both that they were on the right track, but that neither one of them were technically correct. I did my best to explain that monkeys, apes and humans all had a common ancestor, but that it wasn’t a modern ape or monkey.I got my wife hooked on listening to the Skeptoid podcast a year or so ago. She suggested that we let the kids listen to Brian Dunning’s explanation of this common misconception. So with a little searching on the iPhone I downloaded a few episodes. The kids enjoyed the first so I just let it run through a couple episodes. It made for a very nice and educational ride home.
Well yesterday I had Noah and Eve in the car and I had the radio on. Noah piped up and asked, “Dad, Can we listen to another one of those ‘I’m Brian Dunning’ programs?”. Not to be one to stand in the way of a 9 year-old and a 7 year-old who are curious about science, I handing him the iPhone and let him listen to a few episodes. After we got home he kept my phone and ran upstairs and listened to a few more. He was really excited that Brian actually had a video podcast too. So he probably spent and hour watching and listening to Skeptoid and InFact before he went to bed.
I listen to a lot of podcasts, particularly a lot of podcasts that focus on science and skepticism. I enjoy them all but several of them are not safe for children. It’s a shame because as I’ve demonstrated with this little story there is a market for at least a few kids. I want to thank Brian Dunning for doing such a great podcast and keeping it accessible to all ages. I encourage you all to check it out too, no matter how old you are.
That’s Not Fair
So last week Victoria was reading aloud a news article about some of the budget cut that the state is implementing for Georgia schools. Some of the cuts I agree with and others I think are really cutting to deep in the wrong areas. Anyway, not to get off track on a political discussion, one of the budget cuts called for cancelling a certain test that is currently required in 2nd grade. I think this is a good thing. I just feel that we have too much testing in order to qualify for federal moneys, etc, and not nearly enough teaching. Apparently the state agrees and felt that this test really wasn’t needed.
Well as Victoria was reading this article to me my 6th grader, upon hearing that her sibling will not have to take this 2nd grade test exclaimed, “That is so unfair!”. Hmm. This got me thinking. Why did she feel this way? So I asked her. Did she think the test was meaningful? No. Did she herself benefit from the test? No. Then why did she think it was unfair? After a little discussion I discovered that she thought the change was actually for the better but she was upset that they hadn’t done it while she was in 2nd grade.
I wonder how many times we have continued a tradition, a ritual, or anything that we didn’t like when we went through it just because we think it would be unfair for us to have to do something that those coming behind us didn’t have to do. How often do we put our kids through things just because that’s the way we had to do it? I wonder how deep this mindset penetrates our society. Last year Victoria read a book that had Chinese foot binding as a major theme. I wonder how many of these women did these to their daughters just because they felt it would be unfair for them to not go through it after they had. I wonder if there were any salve owners in the south who felt that slavery was wrong but that it would be unfair for them to try to work without them. I could go on but I think you get the point.
I’ve given my kids the “walk to school in the snow, uphill both ways” argument several times. When I do it I hope they are taking away from it that I think it’s cool that they have access to cell phones, the internet, and other modern conveniences. They should be thankful that they have all of these things. I sure hope they don’t think that I’m crying foul. Yes, I wish that I’d have had some of the benefits as a kid that they have now. But I would hate for them to think that I’m putting them through something that I disagree with just because I had to do it.
Well as Victoria was reading this article to me my 6th grader, upon hearing that her sibling will not have to take this 2nd grade test exclaimed, “That is so unfair!”. Hmm. This got me thinking. Why did she feel this way? So I asked her. Did she think the test was meaningful? No. Did she herself benefit from the test? No. Then why did she think it was unfair? After a little discussion I discovered that she thought the change was actually for the better but she was upset that they hadn’t done it while she was in 2nd grade.
I wonder how many times we have continued a tradition, a ritual, or anything that we didn’t like when we went through it just because we think it would be unfair for us to have to do something that those coming behind us didn’t have to do. How often do we put our kids through things just because that’s the way we had to do it? I wonder how deep this mindset penetrates our society. Last year Victoria read a book that had Chinese foot binding as a major theme. I wonder how many of these women did these to their daughters just because they felt it would be unfair for them to not go through it after they had. I wonder if there were any salve owners in the south who felt that slavery was wrong but that it would be unfair for them to try to work without them. I could go on but I think you get the point.
I’ve given my kids the “walk to school in the snow, uphill both ways” argument several times. When I do it I hope they are taking away from it that I think it’s cool that they have access to cell phones, the internet, and other modern conveniences. They should be thankful that they have all of these things. I sure hope they don’t think that I’m crying foul. Yes, I wish that I’d have had some of the benefits as a kid that they have now. But I would hate for them to think that I’m putting them through something that I disagree with just because I had to do it.
The Line Drawing Fallacy
Take a second and look at these four pictures:
image1 image2 image3 image4
For those of you who aren’t familiar with the cars here, there is a Volkswagen Thing and a Jeep. The question now is “Which is which?” The one that looks like a jacked up thing actually is 4-wheel drive and has the motor in the front and the one that looks like the Jeep has the motor in the rear.
These pictures reminded me of a logical fallacy called the Line Drawing Fallacy. I’m going to modify it from the way I first heard it in order to fit these pictures. Let’s suppose that I have two cars in the garage. A Volkswagen on the right and a Jeep on the left. One day I decide it would be fun to start swapping parts form one car and sticking them on the other. I start with a bumper. Then I move to fenders. Then on to the to more serious stuff, the suspension, the wheels, drive train, frame and on and on. When I’m finished I will have a complete Jeep on the right and a complete Volkswagen on the left. Now for the big question. At what point in the process did the Jeep become the VW and the VW become the Jeep? Was it when they swapped the frame? The motor? The hood emblem? So far there isn’t a logical fallacy, just a philosophical conundrum. But what if I challenged the identity of the cars like this? Since you can’t exactly answer when the VW became the Jeep then the car on the right must still be the VW even though it now has every single part of the original Jeep.
It kind of sounds absurd when you are talking about cars. Nevertheless, people make this fallacy of reason frequently. I hear it frequently in the debate about the definition of life. Some argue that since you can’t really define when a person became alive then we must have always been alive. The most egregious abuse of this concept came years ago during the trial of the officers who assaulted Rodney King. An attorney asked the question, “At what point did the officers use excessive force? Was it after the first hit, the second, the third?” He then went on to tell the jury that if they couldn’t define exactly when it became excessive then they couldn’t accurately define what excessive force meant and the officer was not guilty. The other attorney, recognizing the fallacy, approached the jury and took a book and slammed it against the table the exact number of times that King was hit. I think it was 23 times. He then said, “I don’t care exactly when their actions became excessive. It was somewhere between the first hit and the 23rd.” And that’s the correct answer here too. There are multiple shades of gray in our world. But that doesn’t mean that black is the same as white or that Jeeps are the same as VWs.
image1 image2 image3 image4
For those of you who aren’t familiar with the cars here, there is a Volkswagen Thing and a Jeep. The question now is “Which is which?” The one that looks like a jacked up thing actually is 4-wheel drive and has the motor in the front and the one that looks like the Jeep has the motor in the rear.
These pictures reminded me of a logical fallacy called the Line Drawing Fallacy. I’m going to modify it from the way I first heard it in order to fit these pictures. Let’s suppose that I have two cars in the garage. A Volkswagen on the right and a Jeep on the left. One day I decide it would be fun to start swapping parts form one car and sticking them on the other. I start with a bumper. Then I move to fenders. Then on to the to more serious stuff, the suspension, the wheels, drive train, frame and on and on. When I’m finished I will have a complete Jeep on the right and a complete Volkswagen on the left. Now for the big question. At what point in the process did the Jeep become the VW and the VW become the Jeep? Was it when they swapped the frame? The motor? The hood emblem? So far there isn’t a logical fallacy, just a philosophical conundrum. But what if I challenged the identity of the cars like this? Since you can’t exactly answer when the VW became the Jeep then the car on the right must still be the VW even though it now has every single part of the original Jeep.
It kind of sounds absurd when you are talking about cars. Nevertheless, people make this fallacy of reason frequently. I hear it frequently in the debate about the definition of life. Some argue that since you can’t really define when a person became alive then we must have always been alive. The most egregious abuse of this concept came years ago during the trial of the officers who assaulted Rodney King. An attorney asked the question, “At what point did the officers use excessive force? Was it after the first hit, the second, the third?” He then went on to tell the jury that if they couldn’t define exactly when it became excessive then they couldn’t accurately define what excessive force meant and the officer was not guilty. The other attorney, recognizing the fallacy, approached the jury and took a book and slammed it against the table the exact number of times that King was hit. I think it was 23 times. He then said, “I don’t care exactly when their actions became excessive. It was somewhere between the first hit and the 23rd.” And that’s the correct answer here too. There are multiple shades of gray in our world. But that doesn’t mean that black is the same as white or that Jeeps are the same as VWs.
Your Inner Fish
At the recommendation of Teacherninja I recently read Your Inner Fish by Neil Shubin. Thanks for the recommendation. I really enjoyed it.Shubin is a paleontologist and it was his research that discovered Tiktalik, a fossil animal that was almost exactly what was predicted to have existed halfway between fish and land animals. Much of the book describes that expedition and the others that lead up to it.
The book does not stop at just Tiktalik. He builds on the similarities and spends a great deal of time showing how so much of biology is based on remarkably similar structures. He show how early in the development of nearly every embryo, chicken, fish, squirrel or human the same organs form from the same rows of cells in each species even though they may have drastically different uses in the final creature. I found these chapters very fascinating.
Shubin avoids pretty much entirely that political debate that is currently going on about teaching evolution in schools. I guess from his perspective evolution via natural selection is such an established fact he felt no need to defend it. I agree with this position. It was a science book and I don’t fault him for setting all politics aside and just speaking to the science. I would like to point out that Shubin’s discovery of Tiktalik was predicted by evolution and that Tiktalik made his appearance during the middle of the Dover school board’s attack on teaching evolution in school. I’m sure Shubin didn’t plan it this way, but at the same time the Dover school board had “experts” testifying that no transitional fossils had ever been found, Shubin was uncovering yet another transitional fossil.
I listened to this book on CD while working. I plan on going back and reading it for real when I get a chance. Some of the details in the middle of the book deserve more attention than I could give them just listening while working.
Sibling Solidarity
(This is another personal post that will likely upset some readers.)
I love my kids. Sure they can frustrate the hell out of me sometimes but I still love them. I didn’t enjoy being a teenager and I can tell that my two teenagers aren’t exactly digging it either. It seems that most of their troubles come from peer pressure; so-called friends attacking them, frequently physically, for their opinions and beliefs and trying to get them to just go along with the crowd. What’s really upsetting to them is that most of this criticism comes from people whom they think should know better, members of our church. As a parent few thing make me more proud than when one kid stands up for the other, especially in a situation where they really don’t have anything to gain my doing it. We had just such a situation last night. And although it was very traumatic for her, I couldn’t have been more proud of my oldest daughter.
A little back history: Aaron hasn’t been attending church at our ward for the better part of a year now. He has been arranging, on his own, to get rides back and forth from the Brocket Ward. He gets along with the kids in that ward better, they accept him and genuinely love him. In stark contrast, the kids in our ward tease him, call him a Satanist and frequently physically assault him. In his own words it is rather ironic that the least spiritual hours of his week are spent at church. He doesn’t participate in the Varsity scout program on Wednesday night. We’ve moved him to another troop that is a real community troop where sharing the same religious upbringing is not a requirement to hold positions. He gets along much better with these guys. On Wednesday he even arranges for rides over to Brockett to hang out with the kids from that ward that he gets along with so well. In the entire time that he has been attending that Ward only one person from our ward has asked about Aaron. He was genuinely concerned and I thanked him for caring and not forgetting about him. Not a single other person has given us the slightest clue that they’ve even noticed his absence. In stark contrast, the leaders from Brockett comment to us about how they enjoy having him there and miss him when he’s gone.
Well last night I dropped Rachel off at the church for her Young Women’s activity. She typically doesn’t have the same issues as Aaron so I was a little surprised when Victoria brought her home and she was in tears. I asked her what was wrong. Rachel then proceeded to ask if she too could attend Brockett Ward rather than our ward. Apparently even in his absence Aaron is still a topic of conversation. A few of the kids were making fun of him and it really upset Rachel. I found a bit odd that their primary criticism of Aaron is that he “believes in evolution”. Rachel has never been one to gossip and hence she refused to tell me which kids were involved. But she did say that it really surprised her because she had though that these kids were above that. Apparently she had spent half of the meeting outside crying and just waiting for us to come pick her up.
Rachel didn’t openly defy these kids, that’s just not her style, but she did refuse to be a part of what they were doing. They still fight like, well brothers and sisters, but when the chips are down it’s really nice to see them standing up for what they know is right. Rachel didn’t want to tell anybody, especially Aaron, about what happened. I thought that he needed to hear it. After he was dropped off from his activity at Brockett we talked about it and he gave his little sister a nice big hug.
I chose to post this in order to add my name to Rachel’s. I stand behind my family. You criticize one of us you criticize us all. And we won’t tolerate it.
As far as the chief complaint lobbied again Aaron goes, Evolution is a fact. Get used to it. It used to be a theory but it has long ago graduated to a fact as far as I am concerned. I would even go so far as to say that evolution is more of a fact than gravity. Gravity is still lacking a clear definition of how it works. Like evolution gravity has been tested and tested and tested thousands of times but gravity is still lacking a carrier. We don’t quite know how it works. We have hypothesized the existence of the graviton, but haven’t actually seen one. In contrast we have found DNA and natural selection, the elements that make evolution work. So in a very real sense there is more evidence supporting evolution than gravity. In the past when people have asked me if I “believe” evolution I’ve had to rephrase their question in my answer. Because belief requires faith I don’t think it applies to evolution. Faith is a belief without evidence or even in spite of the evidence. You just aren’t looking if you don’t see evidence of evolution. So I respond something like this, “I accept the overwhelming evidence that life evolved via natural selection.”
"If science proves some belief of Buddhism wrong, then Buddhism will have to change. In my view, science and Buddhism share a search for the truth and for understanding reality." The Dalai Lama
Wise words. It's a shame more people don't apply this same idea to thier own beliefs. I'm glad my kids are.
I love my kids. Sure they can frustrate the hell out of me sometimes but I still love them. I didn’t enjoy being a teenager and I can tell that my two teenagers aren’t exactly digging it either. It seems that most of their troubles come from peer pressure; so-called friends attacking them, frequently physically, for their opinions and beliefs and trying to get them to just go along with the crowd. What’s really upsetting to them is that most of this criticism comes from people whom they think should know better, members of our church. As a parent few thing make me more proud than when one kid stands up for the other, especially in a situation where they really don’t have anything to gain my doing it. We had just such a situation last night. And although it was very traumatic for her, I couldn’t have been more proud of my oldest daughter.
A little back history: Aaron hasn’t been attending church at our ward for the better part of a year now. He has been arranging, on his own, to get rides back and forth from the Brocket Ward. He gets along with the kids in that ward better, they accept him and genuinely love him. In stark contrast, the kids in our ward tease him, call him a Satanist and frequently physically assault him. In his own words it is rather ironic that the least spiritual hours of his week are spent at church. He doesn’t participate in the Varsity scout program on Wednesday night. We’ve moved him to another troop that is a real community troop where sharing the same religious upbringing is not a requirement to hold positions. He gets along much better with these guys. On Wednesday he even arranges for rides over to Brockett to hang out with the kids from that ward that he gets along with so well. In the entire time that he has been attending that Ward only one person from our ward has asked about Aaron. He was genuinely concerned and I thanked him for caring and not forgetting about him. Not a single other person has given us the slightest clue that they’ve even noticed his absence. In stark contrast, the leaders from Brockett comment to us about how they enjoy having him there and miss him when he’s gone.
Well last night I dropped Rachel off at the church for her Young Women’s activity. She typically doesn’t have the same issues as Aaron so I was a little surprised when Victoria brought her home and she was in tears. I asked her what was wrong. Rachel then proceeded to ask if she too could attend Brockett Ward rather than our ward. Apparently even in his absence Aaron is still a topic of conversation. A few of the kids were making fun of him and it really upset Rachel. I found a bit odd that their primary criticism of Aaron is that he “believes in evolution”. Rachel has never been one to gossip and hence she refused to tell me which kids were involved. But she did say that it really surprised her because she had though that these kids were above that. Apparently she had spent half of the meeting outside crying and just waiting for us to come pick her up.
Rachel didn’t openly defy these kids, that’s just not her style, but she did refuse to be a part of what they were doing. They still fight like, well brothers and sisters, but when the chips are down it’s really nice to see them standing up for what they know is right. Rachel didn’t want to tell anybody, especially Aaron, about what happened. I thought that he needed to hear it. After he was dropped off from his activity at Brockett we talked about it and he gave his little sister a nice big hug.
I chose to post this in order to add my name to Rachel’s. I stand behind my family. You criticize one of us you criticize us all. And we won’t tolerate it.
As far as the chief complaint lobbied again Aaron goes, Evolution is a fact. Get used to it. It used to be a theory but it has long ago graduated to a fact as far as I am concerned. I would even go so far as to say that evolution is more of a fact than gravity. Gravity is still lacking a clear definition of how it works. Like evolution gravity has been tested and tested and tested thousands of times but gravity is still lacking a carrier. We don’t quite know how it works. We have hypothesized the existence of the graviton, but haven’t actually seen one. In contrast we have found DNA and natural selection, the elements that make evolution work. So in a very real sense there is more evidence supporting evolution than gravity. In the past when people have asked me if I “believe” evolution I’ve had to rephrase their question in my answer. Because belief requires faith I don’t think it applies to evolution. Faith is a belief without evidence or even in spite of the evidence. You just aren’t looking if you don’t see evidence of evolution. So I respond something like this, “I accept the overwhelming evidence that life evolved via natural selection.”
"If science proves some belief of Buddhism wrong, then Buddhism will have to change. In my view, science and Buddhism share a search for the truth and for understanding reality." The Dalai Lama
Wise words. It's a shame more people don't apply this same idea to thier own beliefs. I'm glad my kids are.
How Stuff Doesn’t Necessarily Work
Years ago I had a friend try to explain to me how a clutch-less manual transmission works. I wasn’t quite getting the picture so I googled it. The first website that was suggested was http://www.howstuffworks.com/. The explanations were sufficiently “dumbed down” that you didn’t need to be a mechanical engineer to understand them, but technical enough that they satisfied my curiosity. The pictures and even the animations worked very well to give supporting explanations and imagery. So I bookmarked the site on my browser and began using it for just about any topic when I needed to break things down to more easy to understand terms. I was even pleasantly surprised that their section on telecommunications has come in handy in explaining to other engineers certain aspects of our job. So I signed up for their email newsletter. A couple times a week I would get updates to the site. It was a neat way to keep up on the latest technology and other topics.Well I recently sent an email requesting that they unsubscribe me from that newsletter. I don’t know if they hare under new management or what but the focus of the site seems to have drastically changed. I’m kind of a stickler for certain things. Staying on topic is one of them. I don’t like it when politics strays into religion. Nor do I like it when religion strays into politics. I got annoyed when a channel called the History channel started airing programs about UFOs and ghosts. How in it world does either qualify as history? I now have a very similar criticism with howstuffworks.com.
In my mind, before you give any pixel space at all to a topic on a site called How Stuff Works you have the burden of proving that it works. So I really got annoyed when last week they did a feature on the most compelling ghost photos. Huh? Why in the world would this qualify as how stuff works? So I got poking around and also found that they had a whole sections on complimentary and alternative medicine, the paranormal, and even reincarnation and other religious and mythological topics. I decided to read a few to see if they gave more than just the token sceptical treatment on the last few paragraphs. In a few instances they did give some skeptical treatments. One even gave a link to a lecture by Michael Shermer. But I still felt they gave these topics too credulous coverage.
In today’s page they had a cover story about acupuncture and hypnosis treatments for infertility. The benefits to infertility are only based on the fact that hypnosis and acupuncture reduce stress levels. Perhaps I missed it but nowhere in the article did they point out that just about anything else that lowers your stress levels would have that same effect, yoga, meditation, or just playing with a puppy.
I’m not gonna be one of those who disingenuously claims that I’m “never gonna go to this site again.” But now that they have tipped their hand and shown a desire to post anything that’ll get them web hits, regardless of weither it "works" or not, I can’t say I’d endorse it with the same enthusiasm as I used to. And they definitely will not be the final authority on any of my research from now on.