No Stupid Questions - 167. Is GPS Changing Your Brain?

Episode Date: October 15, 2023

Is it better to be an egocentric navigator or an allocentric navigator? Was the New York City Department of Education wrong to ban ChatGPT? And did Mike get ripped off by Michael Jackson’s cousin? ...RESOURCES"Don’t Ban Chatbots in Classrooms — Use Them to Change How We Teach," by Angela Duckworth and Lyle Ungar (Los Angeles Times, 2023)."How GPS Weakens Memory — and What We Can Do about It," by Mar Gonzalez-Franco, Gregory Dane Clemenson, and Amos Miller (Scientific American, 2021)."Habitual Use of GPS Negatively Impacts Spatial Memory During Self-Guided Navigation," by Louisa Dahmani and Véronique Bohbot (Nature Scientific Reports, 2020)."Navigational Strategy May Be More a Matter of Environment and Experience Than Gender," by Sharon A. Livingstone-Lee, Philip M. Zeman, Susan T. Gillingham, and Ronald W. Skelton (Learning and Motivation, 2014)."Acquiring 'the Knowledge' of London's Layout Drives Structural Brain Changes," by Katherine Woollett and Eleanor Maguire (Current Biology, 2011)."Is Google Making Us Stupid?" by Nicholas Carr (The Atlantic, 2008).EXTRAS"Dunder Mifflin Infinity," S4.E2 of The Office (2007).SOURCES:Véronique Bohbot, professor of psychiatry at McGill University.Nicholas Carr, journalist and writer.Winston Churchill, 20th-century Prime Minister of the United Kingdom.Louisa Dahmani, research fellow at Harvard Medical School and Massachusetts General Hospital.Jason Duckworth, president of Arcadia Land Company and Angela's husband.Omar Johnson, founder of ØPUS United, former C.M.O. of Beats by Dre and former V.P. of Marketing at Apple.Eleanor Maguire, professor of cognitive neuroscience at University College London.Michael Scott, fictional character and protagonist of NBC sitcom The Office.Socrates, ancient Greek philosopher.Hieronimo Squarciafico, 15th-century Venetian editor.Lyle Ungar, professor of computer and information science at the University of Pennsylvania.Katherine Woollett, clinical psychologist at the Kings College London Hospital.

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Starting point is 00:00:00 Hi, it's Mike. We've just launched the Freakonomics Radio Plus membership program. When you become a Freakonomics Radio Plus member, you'll get weekly exclusive member-only episodes of Freakonomics Radio. In addition, you won't hear any ads on Freakonomics Radio or on the other shows in our network, including No Stupid Questions. To become a member of Freakonomics Radio Plus, visit the No Stupid Questions page on Apple Podcasts or go to Freakonomics.com slash plus.
Starting point is 00:00:31 Wait, wait, wait, wait, wait, wait, wait. Go back to Michael Jackson's cousin. I'm Angela Duckworth. I'm Mike Mann. And you're listening to No Stupid Questions. Today on the show, is GPS technology changing your brain? When people give me directions, they're like, and then go three blocks and then you'll turn east. And I'm like, as if I know what east is. Angela, do you ever stop to think what it would be like to live in another age?
Starting point is 00:01:09 Like maybe the Renaissance in Italy or the Roman Empire or the Wild West? No, that is such an interesting question. I probably should stop to think about what it would be like to teleport to another era in history. Well, here's the thing. I don't actually think about that much either, but I just want to be clear that I'm 100% confident that basically in any other time, I would not have survived. So I have glasses. I can't see well without them. I have health issues that require modern medicine. But to top it all off, I have literally like no geographic intelligence.
Starting point is 00:01:44 What? Did I know this about you? Yes, I have literally like no geographic intelligence. What? Did I know this about you? Yes, I can get lost in my own neighborhood and never find my way home. When I first moved to Boston, I decided to go for a run without my phone. And I figured out where to run and how to get back. But I ended up miles away from where I thought I was. And I stopped to ask someone for direction, told him where I lived, and just asked him if he could point me how to get home. And he just looked at me and was like, ah, that's really
Starting point is 00:02:11 far away. And I was like, right. I don't have a phone. I don't have a wallet. I have two legs, and that's how I'm going to get there. So if you could just point me in the right direction. And again, he's like, ah, that's really far away. So I finally convinced him. I said, look, I can't run fast, but I can run far. Can you just point me where to go? Finally, I got there. But I thought about this idea. If I lived in any other time, I don't know that I would have survived. I would have never made it back to the village after the hunt or whatever. Okay. I think I can top that. I lived in New York City for two years. And like, you know how New York City is one of the most mapped out cities and easily navigable. Yeah, the numbered streets. Every time I would walk outside my apartment
Starting point is 00:02:55 building, I'd have to like, look for the Empire State Building and then like get reoriented again and like count street numbers. But okay, you and I could get lost in a paper bag together. This is actually very humanizing. I have a brother, Dave, who's good at literally everything. It's kind of crazy. He's charismatic. He's good looking. He's athletic. He's an incredible business person. When I found out that he was geographically challenged as well, it was the first time I realized that my perfect older brother was human. Super Dave. Anyway, it was really eye-opening for me. So here's my question for you.
Starting point is 00:03:29 I'm so grateful I live in a world with GPS, but I'm curious, am I dumber for using GPS? Or better put, what is using GPS all the time doing to our brains? Okay, that question more generally, like what is technology doing to our brains? That one I have thought of. And one of the reasons I was thinking about it is I stumbled across this paper by two scientists, and their names are Louisa Damani and Veronique Bobot. And they wrote this paper called Habitual Use of GPS Negatively Impacts Spatial Memory
Starting point is 00:04:08 During Self-Guided Navigation. Okay, see, that is very depressing because if I'm already bad without it, think how much worse I am with it. Yes, that would be the depressing conclusion. But let me briefly tell you about this paper because it was really cool and very ambitious so basically you know we all have our favorite gps like i don't know google maps yahoo
Starting point is 00:04:30 maps you know our cars now tell us where to go and we don't even have to look at anything because of course our cars are speaking into our ears so what these two scientists did is they did two kinds of studies one is they just looked correlationally at a cross-section of how much time people had spent using GPS and then gave them tests of spatial memory. Like, you're here, you know, there's like 12 arms in this maze. You get this clue. Now figure out where the treasure is, that sort of thing. And how many people just say, I give up, are like me and just like, thank you so much for this test. Here's my pen. I'm just going to walk out now. This has been super fun. Just like fall to their knees weeping. Yeah,
Starting point is 00:05:10 I might say like, there's no way I have like a less than one in 12 chance of getting like the right one of the 12 arms. That would have been you and me. But I don't know that this was true of the they looked at drivers, actually, I think they looked at adults who owned cars and drove. So they looked cross sectionally for a pattern. And lo and behold, they find that people with greater lifetime GPS experience, right, who have used GPS more, they had worse spatial memory during these self-guided navigation tasks. Self-guided meaning like, okay, now you have to figure this out without GPS. So a kind of like use it or lose it story. That is so depressing.
Starting point is 00:05:46 Okay, well, let me give you the second, like super depressing finding from this paper, which is, okay, so then they were like, look, who knows, correlation is not causation. Let's longitudinally follow some of these drivers and see whether their spatial memory declines as a function of how much they use GPS in the three years following the first cross-sectional study. And yeah, that's pretty much what they found. So
Starting point is 00:06:11 this is a quote from their abstract. Although the longitudinal sample was small, we observed an important effect of GPS use over time, whereby greater GPS use was associated with a steeper decline in hippocampal-dependent spatial memory. And here's the thing. When they say hippocampal, like you have a hippocampus on each side of your brain, on the left and the right, and it's shaped a little bit like a seahorse. Random fact. Love it. And we all love seahorses.
Starting point is 00:06:39 It's kind of the seed of memory. They say, importantly, we found that those who use GPS more did not do so because they felt they had a poor sense of direction, suggesting that extensive GPS use led to a decline in spatial memory rather than the other way around. Oh, my gosh. You know, they wanted to know whether this relationship was a reverse causal relationship, like, oh, you have a bad sense of direction, therefore you rely on GPS. But they want to say in this study that there was more evidence for
Starting point is 00:07:11 the GPS doing the causing. So we're talking about like structural brain changes as a function of using technology. So because I use GPS so much, I'm really bad at directions. Right. One thing that I think is really interesting about this idea of GPS versus maps and kind of how we used to navigate, there was this thing I was reading in Scientific American about how GPS weakens memory and what we can do about it. And they talked about two different types of navigation, allocentric versus egocentric. And allocentric, obviously, allo means other. Sorry, I don't know why I said that. I didn't know that before I read this.
Starting point is 00:07:50 It does mean other. It's a great little prefix. Try dropping allo into your casual conversation in the next week. I have the allo entree, please. Not this entree, the allo entree. Go on. So allocentric navigation means other, but that's when you look at a map and everything is displayed as it relates to all the other features and landmarks in the environment. And so, it's giving you this sense of what's around you. It teaches you contextually what the world looks like. And that is so different than this egocentric navigation, which is what we use with GPS, right? Because egocentric means ego self. That one I did know. That one I think you could drop like,
Starting point is 00:08:32 of course, ego. Obviously. But that means that all of the information is relative to you and your current position, your current orientation on the map, they wrote that we are no longer active navigators. We are passive passengers aboard the GPS. And we're no longer allocentric navigators. We are now egocentric navigators. Right. Okay. I'm just going to go all in on egocentric navigation because that is the only way I can get anywhere. So for those who recognize this kind of navigation pattern, it's like this. You're telling somebody how to get to that restaurant and you're like, okay, so you go like three blocks and then you know that wawa, that kind of closed, but it's sort of open, but it's closed. Okay. When you see that and it's on your left, then turn right and then go another
Starting point is 00:09:18 block. And then there's going to be this like purple, weird apartment building. So then you go two more storefronts and there's the restaurant. That's egocentric navigation because it's all relative to you. Can I point out how amazing it is that you just described it that way? Because you were using points of interest, like turn left at the Wawa. When people give me directions, they're like, and then go three blocks and then you'll turn east. And I'm like, as if I know what east is. Right. And by the way, when I think
Starting point is 00:09:45 of allocentric navigation, which I don't do a lot, but I do with more frequency than you would imagine, because I'm married to Jason Duckworth, who has possibly the world's best allocentric navigation sense. Like he could migrate to the North Pole. Like this kid, well, my husband, migrate to the North Pole. Like this kid, well, my husband, he lands at an airport in some city he's never been. And he'll be like, I think it's like North Northeast from here, right? Like, what? It's like, why would you ask me that question? Just direct this. And then he has a sense of where true North is. Isn't that amazing? And I asked him once how he does this. And by the way, this is a whole topic of research. You won't be surprised. Many scientists wonder how birds do migrate.
Starting point is 00:10:31 They have maybe navigational systems that we don't. But with humans, you know, at least with Jason, he actually notices things like the length of the shadow and the angle of shadows. Right? People actually who have like like, excellent senses of navigation have said they'll notice things like in nature, for example, like the side of the tree that the moss is. I mean, things that you and I would probably not notice. But this allocentric navigation is actually navigating the world more top-down, you know, as opposed to this egocentric, like,
Starting point is 00:11:06 oh, it's all relative to me, the mailbox, the wah-wah, turn right, on your left will be this. And I have to say that for a long time, I thought that Jason's allocentric navigation and Angela's egocentric navigation, I thought it was because I was a girl. I was like, oh, there's a gender difference, like girls navigate the world egocentrically and men navigate the world allocentrically. But I found this paper. You just fed into so many stereotypes. I did. And I even said girl.
Starting point is 00:11:36 I'm just going to say I hope it's not true, but I have no idea. Honestly, I don't think this is a settled research question, but there was this paper in 2014, and it's called Navigational Strategy May Be More a Matter of Environment and Experience Than Gender. And what they did is they gave people, again, these sort of like navigation games, if you will, because you don't really actually take people out into a forest when you study their navigation sense. Hey, here's a compass. Good luck. If we see you again, lucky us. Yeah, right. Hopefully you can run long even if you can't run fast. But basically, they, you know, didn't find any differences in gender in terms of the strategies people used. But, you know, egocentric navigation, navigating the world by like where you are and where everything is relative to you,
Starting point is 00:12:25 whether or not it's related to gender. I don't know. I personally feel like I'm okay with that. I'm okay with that as well. But I will say the one magical piece of allocentric navigation is I think it can lead to greater adventure. Because if you're always going from one spot to the other spot in this linear path, where you're just going to follow the directions and get there, I think so often we miss out on all the things that are around us that we may never have noticed before. So let me give you just a silly example. I was living in Chicago and some friends and I had gone to Eastern Ohio.
Starting point is 00:13:03 Okay, since I do not have a good allocentric navigation sense, wait, let me, Chicago is in Illinois? Correct. And Eastern Ohio is, I mean, this is how bad I'm going to say, like on the left side, the west side, like where is Ohio? No, Ohio is further east than Illinois. Okay, all right, I'm with you. Keep going. So I'm driving. If you're looking at a map, I'm driving from Ohio. I go left to Chicago.
Starting point is 00:13:31 Okay. Thank you. But I'm with two of my really good friends, Lori Sorenson and Jimmy Party, which is a great last name, by the way. It's a party. Jimmy Party. Whoa. But we are driving back to Chicago and we have time because we left early and we don't have to get back to Chicago till that night. And so at some point along the road trip, we decided we're going to stop at every brown roadside sign. Now, brown traffic signs, they're the things that indicate like a recreational activity or cultural interest or something like that. What? I didn't know that. Wait, is that true?
Starting point is 00:14:01 100% true. Wait, for the whole country? Yes, that's my understanding. Whoa, that is perhaps the most useful thing you've ever said to me, that the brown signs mean that they're like recreational sites. Yeah, it's like, here's a presidential library, or here's a other, I don't know, interesting site. Gosh, that is just the most useful thing to know. Kind of. I mean, you don't drive, so I don't imagine you're on a ton of road trips.
Starting point is 00:14:24 That's true. I'm never going to go on a road trip, but it might come in useful in case I have a personality change. And may you not, because we love your personality. But we're doing this drive from Ohio to Chicago. We decided to stop at all the Brown Roadside signs. And it turns into this amazing adventure because we weren't just having to go from point A to point B. My only one that I really remember is we ended up stopping in Gary, Indiana at Michael Jackson's childhood home. And they have this huge, like, I don't know, monument in the front yard of this house. And we paid like an extra $10. Instead of taking a picture like three feet away outside the fence,
Starting point is 00:15:02 we wanted to take a picture right next to it. Of course. We talked to Michael Jackson's cousin. You did? It was all really dumb, but it was just a fun adventure. Wait, wait, wait, wait, wait, wait, wait. Go back to Michael Jackson's cousin. Yeah. We talked to him. What do you mean you talked to him? Was he just like hanging out there? He lives in the house. He's like selling access to the house. He didn't let us in the house, but access to the yard and talks. And that's why they charge you money to come in and take a
Starting point is 00:15:24 picture. And we totally paid because we're like, look, I'm never going to be in Gary, Indiana again. So might as well have the fun experience. No, you will not. So if we hadn't decided to have an adventure and if we'd just gone from point A to point B, we would have missed out on one of my favorite road trips and one of my most fun experiences. Exactly. Still to come on No Stupid Questions, Mike and Angela explore how other forms of modern technology may be affecting our brains. Don't use a computer. Don't use a calculator. Don't use a thesaurus. Don't use a dictionary. Now, back to Mike and Angela's conversation about how technology changes our brains. Okay, let me expand our question a little, if I could. We've talked a lot about maps,
Starting point is 00:16:22 and I think that's important. And as two people who are, shall we say, geographically challenged, good question for us. Allocentrically challenged. I'm egocentrically challenged too. Okay, just challenged. Yeah, just challenged. Let's expand the question though. You know, there was a fascinating article, it's old now, in 2008 in The Atlantic by the journalist Nicholas Carr.
Starting point is 00:16:38 But it kind of shook the cultural zeitgeist at the time. And the headline was, is Google making us stupid? I read that article. It was the cover of The Atlantic the month that it came out. Right. And I think it's still one of the most famous articles written in The Atlantic. I remember talking about it then. The fact that I remember a specific Atlantic article all these years later,
Starting point is 00:16:59 it really had a big impact on people. And he talked about how the internet was chipping away at his capacity for concentration and contemplation. My favorite line in the article, he says, I was once a scuba diver in the sea of words. Now I zip along the surface like a guy on a jet ski. Oh, that is such a good line. Isn't it beautiful? You know what? It's so good. I don't think chat GPT could have come up with it. Okay. I see where you're going here.
Starting point is 00:17:24 I mean, because you could argue that if Google's making us stupid, so good, I don't think ChatGPT could have come up with it. Okay, I see where you're going here. I mean, because you could argue that if Google's making us stupid, ChatGPT is making us total idiots, right? A hundred percent. But so talk to me about that. Is technology making us dumber? And I want to warn that there's always, I think, before you answer, I think there's always this worry that we catastrophize new technology and we're like, oh no, it's going to be the worst. So he talks about as well in this article, and I'm just going to caveat here, that Socrates was really like scared about the development of writing. True.
Starting point is 00:17:58 Because he thought everyone's going to rely on the written word and then they're going to stop having these good memories. They'll become forgetful. And there was this other guy, when the Gutenberg Bible came out, his name was Hieronymus Squarciafico. That is an even better last name than party. I just want to say I can pronounce Hieronymus Squarciafico, which is really hard. But he was so worried about books becoming available because he said books are going to lead to intellectual laziness. People will be less studious. It'll weaken their minds. I got news for you, Squashafiko. Books are not the problem, buddy. Newsflash.
Starting point is 00:18:34 But here's my point. There's always this worry about catastrophizing what's going to happen. And so I don't want to be that guy. But at the same time, talk to me about what it means. want to be that guy, but at the same time, talk to me about what it means. Okay, so I had a friend, well, I mean, I have a friend, but at the time, and I'm thinking of January of 2023, my friend Lyle Unger, who's a professor of computer science, and I think it's hard to appreciate just how much AI has shifted in less than two years. He's really one of the computer scientists at the leading edge of this stuff. So he texts me and he's like, we should write an op-ed together because the New York City Department of Education is banning the use of chat GPT in schools. No, no, no. Bad choice.
Starting point is 00:19:22 Right. So, like, I mean, it's debatable, but certainly... Sorry, I love that I'm like New York Department of Education. How dare you people? As if they're listening to me. Well, you know, maybe they should listen to Mike Mahon. What would be your visceral intuition of why that would be a bad thing? I mean, you understand why they want to ban it.
Starting point is 00:19:39 They're like, we don't want kids to cheat on their essays and, you know, pretend to know things they don't. But why do you think they shouldn't do that? So I completely understand the knee-jerk reaction to ban something like this. Absolutely. I was teaching my class at BYU yesterday, and our guest was Omar Johnson, former CMO of Beats by Dre, Apple executive. Artistic genius. Artistic genius, creative genius. And we were having this conversation about artificial intelligence more generally, but also chat GPT. And this is where we came down on it. I don't believe that artificial intelligence or chat GPT will rule the world, but people who know
Starting point is 00:20:16 how to leverage artificial intelligence and chat GPT will rule the world. So we can either say, oh, we're afraid of this. Don't bring this into my classroom. Or we can say, look, if you are going to survive in the new economy, in the new world, where chat GPT and artificial intelligence are running everything, you need to be the person who knows how to leverage it. And Omar talked about you have to become a prompt genius. You have to figure out how to prompt these things. I mean, otherwise, it's just like saying, oh, you can't use the internet for your research paper. It's like, well, okay, that was a bad bit of advice someone may have given you
Starting point is 00:20:54 back in the early 2000s or whenever. Yeah, so if we tell all of our young people, you know, from age 5 to 18 in the city of New York, hey, don't use this technological innovation. I mean, it's almost like, don't use a computer, don't use a calculator, don't use a thesaurus, don't use a dictionary. And Lyle and I did end up writing that op-ed, which we published in the Los Angeles Times. And we said at the end of this op-ed, will AI one day surpass human beings, not just in knowing, but in thinking? Maybe, but such a future has yet to arrive. For now, students and the rest of us must think for ourselves. And our last line is, like any tool, GPT is an enemy of thinking only if we fail to find ways to make it our ally.
Starting point is 00:21:43 And my ChatGPT story is I've been using it pretty much every day. I'm trying to keep a tab open to ChatGPT. And there's this plugin where you can get ChatGPT to read like a Google Doc or a PDF. And I'm writing this book, as you know, Mike, and I will regularly let ChatGPT give me feedback on entire chapters. Wait, on your own book? Yes. Wait, so your own book? Yes.
Starting point is 00:22:06 Wait, so you say read the chapter and tell me what? Tell me what you think. Wait, what? Give me an example of what it spits out for you. So the advice that I've gotten from Lyle, who's trying to get me to become more like a prompt genius, but right now I'm just like a prompt, you know, like I don't know where I am between like total idiot and genius.
Starting point is 00:22:22 I'm a prompt junior in college. Yeah, exactly. I'm a sophomore. So you tell it who you are, you tell it who you want Chachi P.T. to be. So I'll be like, I'm Angela Duckworth and I'm writing my second book. I'm a psychologist. And then, you know, you can say whatever else you want to say about your audience, etc. But then you say you are my editor and you were giving me feedback at this rough draft stage. And oh my gosh, Mike, the feedback is so damn good. You know, once it said, so you did this in this chapter. It's a little wordy. You repeat yourself.
Starting point is 00:22:55 And then I wrote back to ChatGPT because it is like a conversation. So you're like responding to its last utterance. So I say, okay, interesting. You think I'm repetitive. How so? And here's one very specific true example. I started one of the chapters in this book that I have not yet finished
Starting point is 00:23:12 with a story of Jason working really hard earlier in his life and his career. And then I made my own point about my own life, about me working a little too hard, not working smart, just working hard. And then ChatGPT gave me the feedback that maybe I should choose one of our stories and not tell both of them. So I go back and read the chapter. And gosh darn it, if ChatGPT isn't spot on, I was like, so true, ChatGPT.
Starting point is 00:23:40 I know. Isn't that amazing? It's amazing. See, this is such a good example of how technology is actually making us better instead of maybe where GPS is making us less good at navigating life. Do you think it's making us better or is it just making the product better? Like, is my brain better? That, dear friend, is the question. Okay, let me suggest that there is a classic study that sheds some light on this. It was published in Current Biology in 2011. The two authors were Catherine Woollett, who's a clinical psychologist, and then Eleanor McGuire, who's a professor of cognitive neuroscience at University College London. And the title of the paper is acquiring, quote, the knowledge, unquote, of London's layout drives structural brain changes.
Starting point is 00:24:33 So first, I will tell you that London taxi drivers, you probably know this, right? They're like legendary. Legendary. I mean, you tell them an address and they're like, okay. You're like, wait, I'm so sorry. What? You've heard of that street before? And London is not laid out like New York City, right?
Starting point is 00:24:51 So apparently the knowledge is like shorthand for this like incredibly voluminous set of, you know, landmarks and street names and like what's one way and what's closed at certain times a day. And it's so hard to navigate these London streets that it can take years to train to become a licensed taxi driver in London. But I did get fascinated by this because this study is like so famous and it's so often used to make the point or at least raise the question that maybe there are trade-offs when you train it and gain it in one domain. Okay, great line, by the way, train it and gain it. We're going to mark that. I'm sure someone said it before me, but everyone always says use it or lose it. And I was like, oh, that's so negative. How about train it or gain it? But anyway, I'm sure ChatGPT can come up with that.
Starting point is 00:25:43 Genius, and we're going to document that forever. I think it is more positive. But the story is actually interesting of how the study came about. So one of the authors, Eleanor McGuire, neuroscientist, she first gets the idea of studying London cab drivers because she knows that in animals, so in the animal kingdom, some birds and mammals, they hide their food. I mean, like squirrels do this, right? And then, you know, months later, right, they're supposed to dig up that acorn. That means that certainly Mike Maughan and Angela Duckworth would have starved. Like, we have no idea where we left that acorn.
Starting point is 00:26:18 I probably wouldn't remember I had an acorn. Yeah, you'd be like, acorn? What acorn? And so these animals are amazing at memorizing the locations of all these hiding spots. Because by the way, they bury these things in a way that like other animals can't see, which means they can't see it either. So they truly have to memorize. And they come back in a different season where it doesn't even look the same. Doesn't that just give you a whole new level of respect for squirrels? Yes. I mean, come on.
Starting point is 00:26:46 We bow down to you, squirrels. So anyway, so here's what Eleanor McGuire finds. She's like, okay, if these squirrels have this amazing spatial memory, and she knows that there's a part of the hippocampus that's responsible for this, right? A specialized part of the hippocampus for spatial memories. She's like, I wonder if London taxi drivers also use this part of their hippocampus. And she then asked the million-dollar question,
Starting point is 00:27:12 and it's so genius. She's like, I wonder if in all those years that they're studying and driving in order to pass this exam to get their license, whether their hippocampus grows. They have to rely on their own brain, so they're actually training this area of the brain and not relying on GPS, whether it would change those brain areas. And in fact, that is exactly what she finds. So she and her colleague were able to scan the brains
Starting point is 00:27:39 of London taxi drivers. And let me just read you from the abstract of this paper. We utilized a unique opportunity to study average IQ adults, meaning they were normal people. Not a diss. It wasn't a diss. Yes. It was like, these are not clinical patients with brain lesions, right? Operating in the real world, IRL, as they learned over four years, the complex layout of London streets while training to become licensed taxi drivers. In those who qualified, so those who actually got their
Starting point is 00:28:10 license, acquisition of an internal spatial representation of London was associated with a selective increase in gray matter volume in their posterior hippocampi and concomitant changes to their memory profile. Gray matter, Mike, is the neurons themselves. But when you have an increase in gray matter, it's like when you lift weights and your bicep gets bigger. That's analogous to what they discovered in the study, that these London taxi drivers had bigger areas of their hippocampus, the area that's associated with spatial memory, and they were better at spatial memory tasks. And it was one of the earliest studies to kind of definitively show
Starting point is 00:28:51 you are changing your brain by what you do with it. And if it really is trained or gained, I guess you could say that if you use chat GPT to do certain things, if you use GPS to do your navigation, then maybe you are getting smarter in some ways, like how to use these tools, but the actual function that the technology is doing for you, the argument might be collectively, looking at all the research, that there's a trade-off, right? That the actual thing that you're actually using the technology to do, maybe your brain is doing
Starting point is 00:29:25 less of, therefore you may be shrinking that part of the brain. I mean, that's the guess from this trade-off research. Well, that is both encouraging and depressing, all at the same time. Look, I think Angela and I would love to hear from you. What are your thoughts on how modern technology is affecting the way we think? And what's your experience with it personally? So record a voice memo in a quiet place with your mouth close to the phone and email it to us at nsq at Freakonomics.com. And maybe you will hear your voice on a future episode of the show. Angela, I want to share with you a story that I think brings together a little bit of what we've talked about in this conversation today from a dear mentor of mine, just kidding, named Michael Scott.
Starting point is 00:30:13 Ah, okay. I get it. Just kidding. No, go on. TV show, The Office. And there is a point in season four where they're launching this thing called Dunder Mifflin Infinity, and they are moving their sales online onto a website. And it's threatening all of the salespeople who are like, oh no, what's going to happen to my job? I love this. Go on. It's an early 2000s debacle where people are thinking the internet's going to take my job. Take it today for what chat GPT and AI is going to do to your job. So, Michael Scott, who is a famously terrible manager, good human, but terrible manager who makes so many dumb mistakes, is on a tour of vengeance to prove that technology is not the future, that people matter, you need the human connection to
Starting point is 00:31:01 make sales and all these things. And so he's going to try to prove this. And in the midst of that, he is using a GPS in his car and he comes to a point in the road where it says, turn right. And he's like, well, it says turn right. And he's in the car with Dwight Schrute, who's this other character who's kind of this annoying guy. And he's like, no, Michael, it means veer right. It means veer right. And he said, no, it said turn right. So he turns hard right and he drives straight into a lake. And then he says to Dwight, see, this is what technology will get you. Technology can't make the right decisions. It told me to drive into a lake. Now, obviously, Michael Scott was interpreting technology poorly. Right. Obviously, it was the difference between turn and veer.
Starting point is 00:31:43 Turn and veer, but it did say turn, so in fairness to Michael. And I think this is a silly story. It's a very funny episode of the show, but it paints the picture. Yeah, it makes like a serious point. Right, of like you get to either control technology or it can control you. I think that's where I would summarize kind of what we've talked about. Yes, your brain's going to change either way, but you can also control what you do
Starting point is 00:32:06 with it and how you leverage technology to sort of advance your own cause. Is that fair? It's so fair. And because we were talking about London taxi cabs, I do have this quote from Winston Churchill, who said, we shape our buildings and and afterwards, our buildings shape us. Oh, amen. I think he would agree. I don't know how you'd feel about Dunder Mifflin Infinity, but I think he would agree. I think he'd be so confused. This episode was produced by me, Rebecca Lee Douglas.
Starting point is 00:32:40 And now, here's a fact check of today's conversation. In the first half of the show, Angela says that we all have our preferred mapping systems, and she mentions Yahoo Maps as a potential favorite. However, Yahoo Maps was shut down in June of 2015, as it struggled to compete with other navigation apps like Google Maps, Waze, and Apple Maps. apps like Google Maps, Waze, and Apple Maps. Later, Mike tells the story of visiting Michael Jackson's childhood home in Gary, Indiana, coincidentally located at 2300 Jackson Street, which is also the title of the Jackson's final studio album. He recalls taking pictures of a huge monument to the pop star in the front yard. However, you won't see it if
Starting point is 00:33:26 you visit today. The 5,000-pound granite monument featuring a silhouette of Jackson was removed for unknown reasons when siblings Janet and Randy Jackson visited the property in 2017. And it's unclear whether Jackson's cousin still resides in the 867-square-foot home that once housed nine siblings and two parents. But it's true that various relatives have lived in the space and maintained the property over the years. And according to Amy Howell, vice president of tourism, marketing, and communications for the state of Indiana, you should not have to pay to take a picture in front of the house. Finally, Angela discusses the cognitive trade-offs that might result from using artificial intelligence or GPS technology. But we should note that the authors of the
Starting point is 00:34:16 London taxicab study wrote that drivers who completed the knowledge might experience trade-offs as well. Cognitive neuroscientist Eleanor McGuire found that although the rear of a driver's hippocampus was often larger than average, the front was usually smaller than average, meaning the drivers might excel at some forms of memory, like where specific addresses are located, but become worse at others. That's it for the Fact Check. Before we wrap today's show, let's hear some thoughts about last week's episode on burnout. Hi, this is T.J. Titcombe from Lancaster,
Starting point is 00:34:51 Pennsylvania. Back in the 80s, I was the assistant director in one of the original victim assistance programs in the country. Our staff of seven responded to the scene with police for about 700 calls a year, helping after the most traumatic events that humans could face. We learned the hard way to screen our job applicants for one common quality of professional helpers. We watched out for what we called the savior complex. I can save the world because I care so much. Those folks quickly burned themselves to a crisp. because I care so much. Those folks quickly burned themselves to a crisp.
Starting point is 00:35:27 The counselors who were most successful and effective were able to pull back, accept the often harsh realities of life, and lift others up without taking on their pain. That was listener TJ Titcom. Thanks to her and to everyone who shared their experiences with us. And remember, we'd love to hear your thoughts on how GPS and other technologies are affecting the way you think.
Starting point is 00:35:49 Send a voice memo to nsq at Freakonomics.com, and you might hear your voice on the show. Coming up next week on No Stupid Questions, what is the connection between creativity and happiness? If your child's like, hey, I want to be an artist or I want to go into this job. You could be a starving artist. Maybe we could think about, and then you give a much more practical answer. Like you could be an accountant. And hate your life. That's next week on No Stupid Questions.
Starting point is 00:36:18 No Stupid Questions is part of the Freakonomics Radio Network, which also includes Freakonomics Radio, People I Mostly Admire, and The Economics of Everyday Things. All our shows are produced by Stitcher and Renbud Radio. Lyric Bowditch is our production associate. This episode was mixed by Eleanor Osborne. We had research assistance from Daniel Moritz-Rapson. Our theme song was composed by Luis Guerra.
Starting point is 00:36:45 You can follow us on Twitter at NSQ underscore show and on Facebook at NSQ show. If you have a question for a future episode, please email it to NSQ at Freakonomics.com. To learn more or to read episode transcripts, visit Freakonomics.com slash NSQ. Thanks for listening. My desk actually, it's got like seven boxes of pumpkin spice mix that my computer is standing on because my standing desk is at work. The Freakonomics radio network the hidden side of everything Stitcher

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