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Something You Should Know

20 Jul 2026 · 50m · 18 chapters

Episode artwork

Have We Been Wrong About Posture? & How Memory Champions Think

In short

Episode topic: Two-part episode on (1) whether “good posture” claims are scientifically supported, and (2) how memory champions train their recall. It also includes a brief “why” fact: car speedometers are often calibrated to read slightly high, and tennis balls changed color because of TV visibility.

Guests and backgrounds

  • Beth Linker, professor of history and sociology of science at the University of Pennsylvania; author of Slouch: Posture Panic in Modern America.
  • Nelson Dulles, six-time USA memory champion and two-time Guinness World Record holder; grandmaster of memory; author of Everyday Genius.

Key claims

  • Posture benefits are “posture panic” myths: upright posture is culturally and morally loaded, with roots in the eugenics era; there’s no good science showing posture prevents back pain.
  • Memory is a skill built from techniques: encode as vivid pictures with emotion/sensory detail, store in an organized structure (e.g., memory palace), and review/retrieve to strengthen long-term recall.

Notable examples

  • Posture grading by the American Posture League (A/B/C/D) and early fears linking slouching to tuberculosis; studies showing slumped phone users aren’t more likely to have back pain.
  • Dulles memorizes every Taylor Swift song; he turns numbers into images (e.g., 472 mapped to John Kerry) and uses memory palaces by walking a familiar route.

Written by AI. May contain mistakes.

Chapters

2:18

The Inaccuracy of Speedometers

Explore why car speedometers are intentionally inaccurate.

“A big thank you to today's sponsor, Vinted.”
5:21

Challenging Posture Myths

Discussion on the cultural and historical context of posture beliefs.

“How many times have you been told to sit up straight or stand up straight?”
6:28

The Debate on Good vs. Bad Posture

Examine the opinions on posture's health implications and cultural significance.

“So this is the first I've heard the phrase posture panic.”
10:25

Historical Context of Posture Standards

Understanding the origins of posture standards and their implications.

“So they just kind of leave that out there as an unknown for how long you're supposed to be straight.”
14:00

The Evolution of Posture Concerns

Exploring historical perspectives on posture and societal changes around it.

“more confident, have a lot of characteristics.”
18:48

Cultural Shifts in Posture Attitudes

Discussing how societal attitudes toward posture have changed over time.

“My guest is Beth Linker, author of the book Slouch, Posture Panic in America.”
21:30

Skepticism Towards Posture Science

Examining the lack of scientific evidence supporting claims about posture.

“looking at patients who were slumped over.”
24:20

The Benefits and Risks of Posture

A discussion on the perceived benefits of good posture versus potential harms.

“If you do look at those websites, I mean, I wouldn't trust AI.”
28:00

Debating the Importance of Posture

Discussing the complexities and misconceptions surrounding posture.

“You know, what you said, which I haven't really thought about this before, when you're told to sit up straight, well, so for how long?”
32:03

Understanding Extraordinary Memory

Exploring the concept of memory and techniques to improve it.

“Have you ever met someone who seems to remember everything?”
Show all 18 chapters
34:14

The Journey to Memory Techniques

Nelson Dulles shares his journey and the techniques he learned.

“I was able to do some pretty incredible things with my own mind that I never thought were possible and it just opened the door.”
36:20

Steps to Improve Memory

Describing three steps to enhance memory retention.

“When I wrote my first book, this was almost 10 years ago, I really had to distill down what it takes to memorize anything, to broaden the techniques.”
38:44

Techniques for Memorizing Information

Explaining how to turn abstract concepts into memorable images.

“And as I said before, there's a lot of details to how you do that for different things.”
42:01

Understanding Memory Techniques

Explore how memory champions use visualization and association to remember numbers and concepts.

“Now, if you go a bit more abstract, right, you can have words that are less tangible, right?”
45:55

The Memory Palace Method

Learn about the memory palace technique and how it can help memorize complex information.

“So is what you just went through with the elephant going to be enough for me to remember my speech?”
47:57

Digging Deeper into Personal Memories

Discover how to retrieve deeper memories using context and personal cues.

“Or once you've used it, you can't use it for another thing because you might start to confuse the things you've used it for.”
52:12

Intentionality in Memory Improvement

You can make your memory better by being intentional about your approach.

“You just have to be really intentional about wanting to make it better and doing the things you're talking about.”
52:25

Interview with Memory Champion Nelson Dulles

A conversation with Nelson Dulles about memory techniques and his experiences.

“He is a six-time USA memory champion, a two-time Guinness World Record holder.”
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Transcript

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1:22Michael J. O'Connor: Today on Something You Should Know, your car's speedometer is probably not accurate, and there's a good reason for that. Then, we've all been told to sit up straight and have good posture. But why? The promise is a little fuzzy.

1:37Beth Linker: If you can somehow maintain upright posture, and they never tell you for how long, right? Like no one ever says, stand up straight for work for the rest of the day? For an hour? How long do you want me to stand up straight?

1:50Michael J. O'Connor: Also, most tennis balls are green, but they didn't used to be. So what changed? And memory. You probably wish you could remember things better. Well, a six-time memory champion tells you how.

2:03Beth Linker: A large part of the problem for people is it's not that they're forgetful. It's just that they never put the information in their mind in a clear, organized way, and they're having trouble finding it. And there's techniques to do that, different strategies.

2:16Michael J. O'Connor: All this today on Something You Should Know. A big thank you to today's sponsor, Vinted. I think most of us have what I call someday clothes. I'll wear that someday. That'll fit better someday. Someday I'll have a place to wear that. Meanwhile, it's been hanging in the closet for three years. Vinted offers another possibility. Sell it. Every day, people can sell clothes they're no longer wearing and make some extra money. And they've made the process pretty painless. Take what you don't wear, list it on Vinted. Listing is quick and simple. And when an item sells, Vinted creates the prepaid shipping label for you.

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3:51Michael J. O'Connor: Even though I don't know what kind of car you drive, I can pretty much assure you that the speedometer in your car is not accurate. And there's a really interesting reason why. That's why we're starting with this today on this episode of Something You Should Know. Hi, I'm Mike Carruthers, and I'm glad you're here. So if you've ever compared your car's speedometer to a GPS app, you will likely notice that your speedometer on your dashboard says you're going a little faster than the GPS app says. That's not a defect. It's intentional. Automakers purposely calibrate most speedometers to read slightly higher than your actual speed.

4:33Michael J. O'Connor: Why? Because manufacturers never want a speedometer to tell you you're driving slower than you really are. Differences in tire wear, tire pressure, temperature, and manufacturing tolerances can all affect the true speed of a vehicle. By building in a small cushion, they reduce the chance that drivers accidentally exceed the speed limit because of instrument error. So if your speedometer says 70, your actual speed may be 67 or 68. It's one of those rare situations where engineers intentionally make an instrument a little inaccurate in order to make driving more accurate. And that is something you should know.

5:21Michael J. O'Connor: How many times have you been told to sit up straight or stand up straight? Probably hundreds, maybe thousands. Most of us grew up believing that good posture is essential for good health and that slouching is bad. It's bad for your back, your neck, and maybe it's even bad for your character. But is it? Where did all these rules about posture come from? Is there really one correct way to sit or stand, or have we been worrying about posture far more than we should? It turns out the history of posture is filled with surprising myths, changing science, and a lot of assumptions that don't hold up very well today.

6:05Michael J. O'Connor: My guest has dug deep into where our obsession with posture came from, and what the evidence actually says. Beth Linker is a professor in the Department of History and Sociology of Science at the University of Pennsylvania and author of the book Slouch, Posture Panic in Modern America. Hi Beth, welcome to Something You Should Know.

6:28Beth Linker: Hi Mike, thanks for having me.

6:30Michael J. O'Connor: So this is the first I've heard the phrase posture panic. I've never heard that before. And I've never thought of or heard that posture was like a controversial topic. So how is this a thing?

6:46Beth Linker: Well, the takeaway point is that our belief in the benefits of good posture are not scientifically grounded. They're instead grounded in our cultural attitudes and historical artifacts. It actually comes out of the eugenic era and belief in eugenics.

7:10Michael J. O'Connor: And so explain what eugenics are.

7:14Beth Linker: Eugenics is a very complicated history, but eugenics is the belief in human perfectibility and doing so through correct breeding, so through correct reproduction, but also through engaging in the best possible lifestyle. So it is a movement from the early 20th century that was about optimization of the human body.

7:45Michael J. O'Connor: And is there anything wrong with what your mother told you to stand up straight, sit up straight? Is there, I mean, is there anything wrong with it or is it just being oversold?

7:55Beth Linker: Yes, I would say it's being oversold. Is there anything wrong with it? I talk about how upright posture is actually very morally loaded. In the mid 20th century, straightness became, meaning like word wise and meaning wise, became synonymous with heterosexuality, became synonymous with honesty. And then on top of that is this medicalized history of posture of good posture, being essential for your health. Good posture was talked about in terms of, if you can have good posture now, you won't suffer lots of illnesses in the future, or you won't suffer back pain in the future. So I think, is it wrong?

8:54Beth Linker: I don't know that it's wrong for someone to tell you to sit up straight. I just think it's really loaded. And I don't think it's as simple as people want to think it is.

9:03Michael J. O'Connor: But those claims of you won't have back pain, the other health claims of good posture, are they untrue or, again, just oversold?

9:14Beth Linker: They're just not rooted in scientific data. We have no good science telling us that good posture will prevent back pain. And the problem with this is that this kind of health belief, this pervasive health belief that good posture will prevent back pain has been sold to us since the early 20th century through a bunch of stakeholders who benefit from this kind of health belief. shoe manufacturers, chair manufacturers, a whole fitness industry. Oh, and corsets, I shouldn't forget to mention corsets and back braces, that their whole market exists on creating fear and also a promise that if you can somehow maintain upright posture, and they never tell you for how long, right?

10:16Beth Linker: Like no one ever says, stand up straight for the rest of the day, for an hour? How long do you want me to stand up straight? So they just kind of leave that out there as an unknown for how long you're supposed to be straight. I mean, I guess in the fantasy, it's all day long. And that this, in the end, will translate into no back pain. But even current studies coming out of the US and Australia's have shown in recent years that teenagers looking at their phones with a slight slump, actually, there's no difference between them and teenagers who are standing up straight. There's no evidence that one group has a higher chance of back pain than the other.

11:07Michael J. O'Connor: So you said there's no scientific evidence that good posture, sitting up straight, standing up straight for however long is good for you. But is there any evidence that bad posture is bad for you?

11:23Beth Linker: No. And then I guess the question I would have back at you from that question is, how do we define it? How do we define good and bad posture? You know, if you think about the human body, there's a lot of variability in the human body, a lot of diversity. And then if you think of the spine, it's the same thing. There's a lot of diversity. The spine is very pliable. But yet we walk around with these words, good and bad. And it's probably been culturally taught to us what is good and bad. So good is upright, whatever that means or looks like. And bad is slumped over or curved to one side or the other.

12:09Beth Linker: But that's pretty imprecise. so what does that even mean to say to do a study on bad posture what would that look like i don't even think we've agreed on a universal standard of what good and bad posture is now in the past uh there was this group called the american posture league they were founded in the 1940 in 1914 they grew out of this eugenics movement of of a belief in body bodily perfectibility and they were also I should add they were anti-surgery so they wanted to develop posture standards human posture standards so that there could be fewer at that time back surgery was very new so fewer back surgeries but at the same time they really targeted the whole general population in the u.s and they tried to develop these tools to determine how to grade posture literally grading posture with an a b c or d and they worked in universities and they worked in schools and this was the start of the big research uh efforts into posture.

13:30Beth Linker: But I think by today's standards, we would see their measurements of human posture as pretty simplistic.

13:38Michael J. O'Connor: So let me ask you this, because you said this started in the early 20th century. But today, I would imagine that if you took people and put them in a room and had other people look at them, and some of them had really good posture, and some of them did not, people would say that the good posture people are, whatever they would say, look healthier, look more confident, have a lot of characteristics. And I don't know if that's human nature to notice that in people, or is that a learned thing from this movement that you're talking about?

14:16Beth Linker: I would say it is in large part a learned thing. I don't know that it's innate. You know, if you look at all of Western history from Plato to Aristotle onward, philosophers since ancient history have been discussing or pointing out at least the uniqueness of the human body of upright posture. There would be maybe etiquette manuals, so how to conduct oneself, how to hold oneself, would be found in etiquette manuals for polite society. It was more of a marker of status than anything particularly health-related.

15:04Michael J. O'Connor: You mentioned that this posture panic thing, this whole big deal about posture, started in the early 20th century. and I'm curious what people were thinking before that. Was this just a non-topic or what? And I'll ask you about that in just a moment. Hiring the wrong person is expensive, but it's also exhausting because now you haven't solved your problem. You've created a new one. You've spent time interviewing and training somebody, but it's the wrong person and it's just not working. So when you're hiring, you don't just need a person. You need the right person. And that is a job for Indeed Sponsored Jobs.

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18:57Michael J. O'Connor: And so, Beth, if all of this started in the early 20th century, then what was the whole attitude about posture before that, before this big furor about posture started? What were people saying and thinking?

19:11Beth Linker: So as I indicated earlier, there were a lot of etiquette manuals. But interestingly, if you look at the etiquette manuals from even the early republic of this country of the United States, most etiquette manuals would advise well-bred people to have a slight lean in their stance when they stood, when they sat. The only people, according to certain etiquette manuals, who sit bolt straight up were lower class. And as you can tell, like fashion and cultural ideas, I think we can all get a sense that those change over time, right? And it wasn't until the late 19th, early 20th century, and after Darwin's discovery and the scientific community's embrace of Darwin's theory, that evolution happened not because the human brain developed first, or that human speech developed first.

20:20Beth Linker: Darwin actually posited that humans came about and were able to become more supreme beings because of upright posture. So their straight spine. So without a straight spine or upright posture, our human intellect and our speech would not have developed. So after Darwin, everybody gets very concerned about upright posture. and it is a real concern as you said especially in the United States this is the you know we have the second great migration into the country suddenly the huddled masses maybe they're going to bring disease and disability with them all of these people who are hunched over and Darwin believed that upright posture occurred first so a lot of researchers physicians and anthropologists went around the world looking for fossils to prove Darwin right.

21:25Beth Linker: They proved him right. Then these same physicians started to apply this theory in their clinic, looking at patients who were slumped over. And these physicians feared that we were going into a decline that the nation was going into a decline that there could be de-evolution so suddenly this link between poor posture and a de-evolution or degrading of a civilization became very real and a fear and so they began this preventative health program that resulted in widespread surveillance of human posture that included things like buying the right shoes, sitting in the right chair, wearing the right foundation garment, the right undergarment.

22:22Michael J. O'Connor: But you've said that there is no evidence in science that good posture is good because no one's looked or people have looked and found out that there's no evidence.

22:35Beth Linker: I would say that the early 20th century posture scientists did look, did research this. They found that 80 % of the population slumped or slouched. They never did any follow-up studies, however, to see whether or not that actually mattered. It was just simply 80 % of the population has poor posture. Therefore, we need to be on guard against, in the early 20th century, they believed it was linked to respiratory diseases. They believed it was linked to tuberculosis. So they thought that if you had a slouched posture, you would develop tuberculosis. And then later in the century, it became more about back pain.

23:26Beth Linker: but they never did any concrete studies and at this time we have to remember that just as I said cultural norms change and fashion changes the dictates and demands of science change if you look at today's science and the standards of today's science there is no evidence that poor posture is going to that is it's going to necessarily lead to back pain or that good posture is going to prevent back pain.

23:57Michael J. O'Connor: But back pain aside, I mean, when you Google or ask AI about posture, you know, Harvard, Brown University, all these people come up and say, you know, it's all about body alignment. It's good for balancing your weight. Chronic slouching causes muscle fatigue. There seems to be a consensus among academia that good posture is good for you.

24:21Beth Linker: If you do look at those websites, I mean, I wouldn't trust AI.

24:26Michael J. O'Connor: I'm looking at the Harvard website.

24:29Beth Linker: Yes, yes, I know, the Harvard. And I've looked at that myself. I think because I think that message is out there because we have to distinguish between preventative health care, right? So prevention and actually interventive or therapeutic health care. There isn't a lot of cutting-edge science in preventative healthcare. And I think this is just a safe message to send out there, yet also meaningless, because no person maintains the same posture all day long. I have ergonomic chairs. I'm not like a denier.

25:14Michael J. O'Connor: I'm not a posture denier.

25:16Beth Linker: So I'm not denying that sometimes I feel better when I'm in my ergonomic chair, but I'm not sitting in my ergonomic chair so that I can hold an upright posture for three hours. Actually, I'm sitting in it and then I move places. You know, we all move. The spine is incredibly dynamic.

25:39Michael J. O'Connor: For whatever reason, a lot of people are on the good posture bandwagon because it's not just Harvard. When I look online, I see the Cleveland Clinic, Brown University, a lot of places, reputable places have articles that talk about the benefits of good posture.

25:58Beth Linker: No, it's not just Harvard, but I think they just I'll repeat, it's an echo chamber, because no one has bothered to look into it. No one questions it. It is such a truism that no one questions it except for, I think if you asked any physical therapist trained in the last 20 years, they would tell you that this is not valid, that this is something that people want to believe in, but it has not been scientifically proven.

26:27Michael J. O'Connor: But it seems to me that the pursuit of good posture is fairly benign. I mean, it's not going to do anybody any harm. And as we talked about, I think people perceive a person who stands up straight, who sits up straight. They perceive them in a positive way. They project confidence. In other words, there's no real harm in good posture.

26:52Beth Linker: It's benign until it's not benign. It's benign until as people come into a clinic. I'll never forget in the 90s when I was in the clinic, it was the first, I don't know, I don't know if it was the first, but a real resurgence in general population doing Pilates. Pilates came out of the same eugenics movement, was primarily initially in the early 20th century and mid-20th century for dancers, people in prime physical shape. In the 90s, it kind of came out along with Jane Fonda and her aerobics, you know, as, oh, this is a great new fitness thing for people to do. And as a physical therapist, I was seeing so many people with back pain.

27:40Beth Linker: similarly yoga can cause people a lot of injuries and back pain so it's not always benign um if somebody takes it to a great extreme you know if somebody becomes really self-obsessed about their posture and they don't understand their own body and body alignment it can create problems. The other way that I do not think it's benign is I think going back to what you asked about in a lineup of people, and you see people slouched over, it leads to this irrational bias against people who don't have perfect posture.

28:22Michael J. O'Connor: I guess what I meant by benign was like, so sometimes when I'm working and I may be a little hunched over and then my back will start to hurt and if i sit up goes away and so you know it then seems like that's a good thing well you changed your position well i sat up i changed my posture i'm not i wasn't slumped over

28:43Beth Linker: it's happened to me yeah yeah that's good i mean i'm glad and that's your body's way of telling you like hey change your position change your position this position isn't good anymore change it but i bet if you sat straight up like you did to correct it for a very long time you would also start to feel pain and so then slumping over would be like okay i'm i got a little relief so i think it can be the reverse it's more about our bodies are flexible and 3d and it's about frequent movements and frequent change of movement rather than this ideal of ramrod, perfect straight spine.

29:30Michael J. O'Connor: You know, what you said, which I haven't really thought about this before, when you're told to sit up straight, well, so for how long? Is sitting up straight for 30 seconds or even five minutes? I mean, what is that supposed to do? Nobody sits up straight all the time. And it certainly makes you wonder about just how important all this talk of good posture really is. I've been speaking with Beth Linker. She's author of the book Slouch, Posture Panic in America. And there's a link to her book in the show notes. Hey, Beth, thank you for coming on and talking about this.

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32:06Michael J. O'Connor: Have you ever met someone who seems to remember everything? Names, faces, birthdays, conversations from years ago. They can pull it out of their head as if it's nothing. And meanwhile, the rest of us walk into a room and forget why we went in there. So are some people just born with an extraordinary memory? Or is memory actually a skill anyone can improve? My guest says that a great memory isn't a gift. It's a set of techniques that almost anyone can learn. Nelson Dulles is a six-time USA memory champion, a two-time Guinness World Record holder, and one of only a handful of grandmasters of memory in the world.

32:49Michael J. O'Connor: As a demonstration of what's possible, he recently memorized every Taylor Swift song and can identify any one of them after hearing it for just a second, even though he's not an especially big Taylor Swift fan. He's here to explain how memory really works and the surprisingly simple ways you can make yours much better. His book is Everyday Genius, Hacks to Boost Your Memory, Focus, Problem Solving, and Much More. Hey, Nelson, welcome to Something You Should Know. Hey, nice to meet you.

33:20Beth Linker: Thanks for having me.

33:21Michael J. O'Connor: Sure. After reading your list of accomplishments of all the memory-related things you can do, it just seems like your brain just works better than mine and better than a lot of people's.

33:35Beth Linker: Yeah, I don't think it's so much about that mine works better than yours or anybody's out there. I think that's kind of the genesis of my whole journey is I thought I had an average memory that I was just as gifted as the next person, nothing special. And I discovered memory techniques and I discovered memory competitions. I was inspired by my grandmother's passing from Alzheimer's and vowed to myself that I would never let that happen to me. Not that I knew what to do in order for that to happen, but getting roped into this world of mnemonics kind of haphazardly flipped the script for me. I was able to do some pretty incredible things with my own mind that I never thought were possible and it just opened the door.

34:20Michael J. O'Connor: That's a great story. And, you know, I was thinking when you said, you know, you learned about all the things that the mind can do, how I'm old enough to remember, we're just talking about this. I'm old enough to remember when I had a lot of people's phone numbers in my head and could recall them at any moment because you needed to. You had to have them. If you wanted to call people, there was no, you know, memory in your phone on the kitchen wall kind of thing. Yeah. But now you don't. now the phone remembers everything for you. And that's kind of a shame. And in fact, it's hard for me to even imagine remembering all those phone numbers, but it wasn't burdensome at the time.

35:03Michael J. O'Connor: It was just something you had to do. And I think that's a great example because

35:08Beth Linker: a lot of people, maybe not younger kids right now, but millennials and older, you can all relate to that, you know, where we had this capacity and it seems so commonplace and dare I say, easy to remember a large amount of numbers, phone numbers related to people. And there was a lot at play there. One was, what other choices we have? The other thing is that we're, we were more intentful about the process, right? We were there, we're tapping these numbers and some of us even turning the rotary to get these numbers. And that physical process, doing it over and over again, lended itself to being burrowed in our memories.

35:51Beth Linker: Nowadays, we don't have to think twice. We can ask an AI assistant to call somebody and we never even have to even touch our phone. It's wild. But hopefully that's a good reminder to people that, you know, our brains are capable of things that nowadays might seem really difficult.

36:08Michael J. O'Connor: Is there like a principle underlying all of the ability that you have to remember things? Like there's a way, one way to do it, or does it depend on what you're trying to remember? There are different ways for different kinds of things or how does it work? Yeah, great question.

36:25Beth Linker: When I wrote my first book, this was almost 10 years ago, I really had to distill down what it takes to memorize anything, to broaden the techniques. Because, you know, when you dive into a memory competition, there's very specific things we have to memorize. So you train for that, right? We're memorizing numbers. We're memorizing playing cards, poems, lists of words, and then names and all sorts of other extra details about people. And that's kind of it. You know, so you train that and you're good at that. But then when you're trying to broaden the techniques to everything, what is at play here?

36:59Beth Linker: And I've been able to boil it down to really three simple steps that I used to remember everything. And I'll share them in a second. But, you know, each step has its depth to it, right? So really, depending on what you're memorizing, you can modify the techniques appropriately for different things. But the basic fundamental steps are the same. And it starts with visualizing, right? You have information that's out there in the world that you'd like to bring into your brain. And remember, so turning that information, which is often in an abstract form, our brain really, it's really just designed for pictures and responding to emotional triggers that we want to remember so that we can survive.

37:46Beth Linker: That was what our brain was designed to do. But then in modern day, you know, in the most recent thousands of years, our brain has now numbers in the mix and these things called names that represent these other humans around us and philosophical ideas and really abstract concepts. These are all relatively new things for our brains to process. And it's not great at it because it isn't a clear, obvious thing that signifies, you know, that you'll survive or not, whether you remember this. So what I'm trying to get to is we need to trick our brains in a way we need to encode the information in the form that it likes in the media format that it likes.

38:28Beth Linker: And so what that means is basically you need to turn what you're memorizing into a memorable picture that has meaning to you. And you can do that by association. You can do that by instilling emotional color to it and all the sensory data. That's the stuff that we remember. So that's the first step. And as I said before, there's a lot of details to how you do that for different things. How do you turn a number into a picture? How do you turn a playing card into a picture? How do you turn a name into a picture? There are different strategies to do that. But essentially, trying to turn it into a picture is the first step.

39:03Beth Linker: The second step is storage. Like, what do you do with these pictures? Great that you have an image now for the thing that you want to remember, but what if you have a bunch of them? Where do they all go and how do you remember them in sequence? How do you reliably store them in your mind so that you can retrieve them at will when you need them, right? Without fail. because honestly, that's a large part of the problem for people is it's not that they're forgetful. It's just that they never put the information in their mind in a clear, organized way and they're having trouble finding it. So that's the second step.

39:36Beth Linker: And then, and there's techniques to do that, different strategies. And then the final step is review. We remember things for the longterm. If we tell our brains that it's important and by to make it important is we revisit it a lot, right? If our brain is constantly trying to access it and recall it and use it, that tells us our brain that it's useful and it should stay there for much longer. So those three things together will make it very difficult to forget things.

40:07Michael J. O'Connor: All right. So let's go back and revisit those. And as you were saying, there are different techniques. Like how do you turn numbers and words into pictures? I'd love to know that.

40:20Beth Linker: Yeah, sure. So let's start with kind of something that's probably the easiest to turn into a picture, which might be in your native tongue, a simple noun, right? Like a word that is like a very tangible thing. Like let's say elephant, you know, maybe you're memorizing a list of words and the first word is elephant. That would be a pretty easy thing to visualize because, you know, in english language i hear the word elephant and i know what that means i can picture an elephant right um i can i've maybe never physically been in front of a elephant but i've probably encountered an elephant the concept of an elephant somewhere in my life and so thinking about a picture for that isn't going to be too difficult right but it's all about making that picture really pop out so again using all of your senses making it emotional giving it some movement some action in your mind, in your visual eye, mind's eye, that's where the sweet spot is.

41:16Beth Linker: So, it's not just an elephant, right? It's this massive beast that I'm now standing in front of on a safari in Tanzania, let's say, in Africa somewhere. And I'm imagining myself right in front of this elephant face-to-face. It's just me and this animal. And maybe it's starting to charge at me, Right. And I can feel how scared I am. I can hear the elephant start to make some noises and even his stomping as he runs toward me, the dust coming up from his feet. Maybe even my, my, my terrified scream as I run away. Right. All of that, as I paint that picture in my mind is really what's now suddenly making this much more memorable than just that word on the page.

42:01Beth Linker: All right. Now, if you go a bit more abstract, right, you can have words that are less tangible, right? And then they are maybe something that are not in your, you know, your vocabulary. So something like, I don't know, we can go simple, like just say extraordinary, right? Most people know that word, but like, how do you visualize that? Well, you'd probably have to think of something associated with that. So maybe someone who is extraordinary. And that might be different for different people. But it's not a direct image for that word, right? But that's part of the process is trying to figure out how our brains can make associations that will link us to the information.

42:41Beth Linker: And then when you get to even more complicated things, let's go all the way to numbers where you have these symbols now that represent things. How do you do that? Well, in memory competitions, memory athletes have developed systems where we translate preset groupings of numbers into preset images. So, for example, for me, and again, this isn't necessarily something for everyday people to do unless they're competing, but a lot of memory athletes will have three digits representing one concept. and that's just pre-learned. So no matter what number I see, I can always divvy it up by three and have a picture that comes to mind.

43:20Beth Linker: And then I memorize that sequence of pictures instead.

43:23Michael J. O'Connor: Wait, wait, I'm sorry, you lost me. The three, can you give me an example of that? Yeah, sure. Give me a three digit number.

43:32Beth Linker: Four, seven, two. That's crazy that you said that because that is exactly a number that somebody else in a previous podcast I did said. Out of all the numbers, he chose that one. Anyways, that's John Kerry for me. If you remember the former, he ran for president against Bush. There's a whole reason why he is 472. It's somewhat in the weeds, not important for this right now. But just imagine that instead of seeing 472, if I have a massive number that, or it doesn't have to be massive, maybe a credit card number or a passport number, and I have 472 in there, I don't see 472. I see John Kerry, right?

44:09Beth Linker: And that's meaningful to me because I remember I was in college when he was running. I remember the debates. I can picture him and everything that comes with it, which includes my experience at college. It's this whole thing. If I really dive deep into the sensory information that comes with this idea of John Kerry. And so I imagine picturing that or some equally well-known person or thing in your mind instead

44:37Michael J. O'Connor: of this abstract set of numbers 472 makes it a lot easier so when you're remembering say a credit card number are you seeing i mean you could see what various senators faces in your mind of you know there's john carrey and there's john glenn and there's i mean is that how you do it yeah

44:56Beth Linker: basically i don't have many senators he's he's an option i do have presidents um but there's a lot of other things i mean there's characters from star wars there's um family members there's pets that I used to have. There's teachers and cartoon characters.

45:11Michael J. O'Connor: And it's all broken down into three numbers that are three numbers long. Basically. Yep.

45:18Beth Linker: And then I weave it all into a narrative. And this goes back to the structure step of everything, right? Because it's fine for maybe a group of three. But what if I have my passport number, which might be, say, nine digits? So, I have three groups of three. So, So what do I do? Well, I put each person that represents those triplets in a story together, and that helps me remember the sequence.

45:40Michael J. O'Connor: So let's go back to your example of the elephant. In a competition, I get that you might need to memorize a list of words, but I don't need to memorize words. I might need to memorize a story about an elephant, or I might need to memorize a sentence or a paragraph. Or a speech. Yeah, or a speech, not just a word. So is what you just went through with the elephant going to be enough for me to remember my speech?

46:09Beth Linker: Right. So, you know, the elephant was a one-off, just one thing to remember. And that's rarely the case that that's what the data is. It's usually going to be a sequence of things or a collection of things. And so that's where that second step comes in again, that you need to have some kind of structure to house it all and to preserve some of the structure of the information. which oftentimes comes down to ordering. So there's this phenomenal technique called the memory palace. And this is what we use to memorize hundreds and hundreds of numbers, long lists of things, even very complicated speeches or poems that have many lines to them.

46:49Beth Linker: And all it is, is breaking each kind of component down into pictures and then storing them in this memory palace concept, which is, if you give me a moment to explain it, it's where you imagine a place that I guess palaces back in the day. This is a technique from thousands of years ago, but you could use your house or your studio apartment, whatever you live in, and imagine yourself walking through the space. All right. In some order that makes sense. So I might start at the front door of my house and then navigate through the rooms till I get to the back door or upstairs bedroom or something.

47:27Beth Linker: And along the way, you can place or imagine the images for the things you're trying to memorize there in the space, interacting with it. And that ordering, that pathway, which you know pretty well because it's your house. You don't have to memorize that. It's already encoded in your mind. We'll hold that ordering. And when you want to go and retrieve the information, you just mentally navigate back through that same exact route. and the images, if memorable enough, will be there for you to pick back up.

47:55Michael J. O'Connor: Can you use your house like that a lot of times? Or once you've used it, you can't use it for another thing because you might start to confuse the things you've used it for.

48:06Beth Linker: Right. No, that's a great question. And the strategy behind it is, yes, when you use a memory palace, it is, especially for the first time, if you've never done this before, it is so sticky and such an experience for people who have never gone through that before and saw seeing how amazing their memories can be so it's really hard to shake some of the first things you put in a memory palace but as you practice you get better ironically at forgetting what you put there when you want to but what i recommend is you know having multiple memory palaces and you know depending on whether it's information that you plan to hold for just you know a few hours until you can spew it back out or a couple days.

48:50Beth Linker: Maybe there's information that you just want to know forever, right? Like maybe you're learning the periodic table and you would just love to know that information for as long as you live. In that case, I might choose a specific new memory palace that will always and solely just hold that information. And so I never kind of tamper

49:08Michael J. O'Connor: with it with anything else. Do you have to deliberately decide this is something I need to remember? Or do you just remember things better because you're that guy that remembers things better?

49:21Beth Linker: It's a bit of both, but it is still a very involved, active process of me saying like deliberately that I need to remember this. But that's again, going back to my mind being primed for it. I'm always thinking like that. So, it's really just, I know it's to the listener, it might sound like, oh, and now he has to remember to remember. But I'm always thinking about remembering. I don't know how else to put it. And this isn't something that I can share a technique for, but this is from years of training my mind and applying memory techniques and giving memory such an importance in my life, which I don't think a lot of people do anymore because we don't have to.

50:01Beth Linker: And it's a shame because there's so much more to what our memories can do.

50:05Michael J. O'Connor: And when you look back on your life, you remember more of your life, but are there like holes in that story? Are there bright points that have real spotlights on them and others that you really don't see very well?

50:20Beth Linker: Sure. Yeah. You know, my memory isn't perfect. You know, but what I find often is, of course, there's going to be memories that I can quickly jump to and that are so vivid and I have so much more detail about them than others. And then there's ones that I have to really dig for. But once they I dig for them, I spend time with them. A lot comes out. You know, I used to play this game where I would just between me and my wife, I would ask her to do it together. But I'd ask her to tell me any year in my history, you know, like 2005. Right. And then I'd be OK. Give me a season. And she'd say summer.

50:58Beth Linker: What did you do summer 2005 on the spot? And I don't know that. Right. I'd have to think about it. And at first I'd be like, wow, I don't I don't know. I don't really remember much of that. But then if you really give it some time, and I encourage people out there to try this because you might be surprised with what you dig up, I can start to piece things together by kind of context clues, right? So I'll start to think, okay, where was I in 2005? I was living in Miami. I was still in college. I graduated in 2006. Okay. So this was the summer before I graduated. Oh, I was dating this girl, Natalia.

51:31Beth Linker: Okay. Oh, that was the summer. And now suddenly I remember this cruise that I was on with my family because I missed my girlfriend so much as I was going through this cruise. We went to the Baltic. It was phenomenal. And now suddenly I have this whole door that just opened. And now I'm on this cruise. And I'm thinking exactly of all these memories that I had a moment ago. I didn't even know what I did that summer, right? And I think memory works a lot like that. Sometimes you might even hear people say that memories, our memories are all in there. It's just the noise and the connections that get lost.

52:04Beth Linker: And it just takes a matter of kind of jolting yourself back to getting those or finding the right cues to connect you back to them.

52:12Michael J. O'Connor: Well, it seems, I guess the message is you can make your memory better. You just have to be really intentional about wanting to make it better and doing the things you're talking about. I've been speaking with Nelson Dulles. He is a six-time USA memory champion, a two-time Guinness World Record holder. He's author of the book, Everyday Genius, Hacks to Boost Your Memory, Focus, Problem Solving, and Much More. There's a link to his book in the show notes. Nelson, great. This was real interesting. Thanks. Awesome.

52:42Beth Linker: Well, thank you, Mike.

52:43Michael J. O'Connor: Great questions.

52:47Michael J. O'Connor: If I asked you what color tennis balls are, you'd probably say yellow. But until the 1970s, they weren't yellow, they were white. And the reason they changed had nothing to do with tennis. It was all because of television. Researchers discovered that the fuzzy, fluorescent yellow-green balls were much easier for viewers to follow on color TVs than white balls, especially against the changing backgrounds on grass or clay courts. In 1972, the International Tennis Federation officially approved the new color and within a few years, yellow had all but replaced white. So, one of the most recognizable objects in sports isn't that color because it's better for the game, it's because it's better for the audience.

53:34Michael J. O'Connor: And that is Something You Should Know. This podcast is produced by Jennifer Brennan, Jeff Havison, and the executive producer is Ken Williams. I'm Mike Carruthers. Thanks for listening today to Something You Should Know.

53:48Beth Linker: purchase new carpet from the home depot and get it installed for free right now shop the stylish choices and simple pricing of carpet from home decorators collection traffic master or life proof with pet proof technology and see for yourself why nobody beats our prices enjoy new carpet with free installation right now at the home depot offer valid october 15th through november 1st, 2026. Exclusions apply. For licenses, see homedepot.com slash license numbers.

54:18Michael J. O'Connor: Mr. Monopoly here. Miss me? Monopoly is back at McDonald's with millions of prizes. A 2027 cheap charity. A Carnival Cruise vacation.

54:29Beth Linker: Gift cards from DoorDash and Best Buy.

54:32Michael J. O'Connor: He'll then play in the McDonald's app. Get your bag. No purchase necessary. 50 US and DC age 18 plus. See play at mcd.com for rules and play at mcd.com slash AMOE for info and playing without purchase by mail by November 2nd. Chance card game ends November 8th. Game ends November 22nd, 2026. See rules for prize details. Monopoly is a registered trademark of Hasbro.

From the publisher

Take a look at your speedometer the next time you're driving. Chances are, it's lying to you. The speed you're actually traveling is probably different from what the dashboard says—and that's completely intentional. https://en.wikipedia.org/wiki/Speedometer?utm

From the time we're children, we're constantly reminded to "sit up straight" and "don't slouch." We've been told that good posture prevents pain, improves health, and even makes us more confident. But how much of that is actually supported by science? According to Beth Linker, surprisingly little. In this conversation, she explores where our ideas about posture came from, why so many assumptions have gone unchallenged, and what the evidence really says about the way we sit, stand, and move. Beth is a former physical therapist, medical historian, and author of Slouch: Posture Panic in Modern America (https://amzn.to/4480Hhk).

Imagine remembering names almost instantly, recalling conversations in remarkable detail, or memorizing enormous amounts of information with ease. It may sound like a rare gift, but Nelson Dellis says it's a skill almost anyone can learn. As a six-time USA Memory Champion, a two-time Guinness World Record holder and Grandmaster of Memory. He has mastered techniques that dramatically improve recall—and they're far simpler than most people imagine. In our conversation, Nelson explains how memory really works, why we forget so much, and the practical strategies you can start using immediately to remember more of what matters. He is author of Everyday Genius: Hacks to Boost Your Memory, Focus, Problem-Solving, and Much More (https://amzn.to/3Rlxpc7).

Tennis balls haven't always been bright yellow. For decades they were white, just as many people assume they always were. So why did manufacturers change one of the most recognizable pieces of sports equipment in the world? Interestingly, the answer has very little to do with tennis players—and everything to do with the people watching the match. https://www.itftennis.com/media/2280/balls-history-of-tennis-balls.pdf

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