Something You Should Know - How to Read People & The Most Extreme Things on Earth – SYSK Choice

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Starting point is 00:00:28 Today on something you should know, ever meet someone named Susie, and she kind of looks like a Susie? Why is that? Then, a person's gestures or movements can tell you a lot about them if you know how to read them, like their feet. The direction in which people's feet are pointing is also highly informative. If you're chatting to somebody new, it's always a good idea to look at their feet. Ideally, if you extend the lines out from their toes, you should be enclosed within those two lines. Also, why saying grace can make a meal taste better. And extremes in our world.

Starting point is 00:01:08 The loudest, the stickiest, the biggest, and the brightest. The brightest light on earth is actually in Las Vegas, and it shoots up in the sky from one of the resorts there. In fact, it's so bright that it attracts all the wildlife from miles around, bats and the insects and that type of thing. All this today on Something You Should Know. Ready to take your investing knowledge to pro-level? This is Fidelity Connects, your daily edge in the markets.

Starting point is 00:01:37 Get deep insights on real-time market topics that may impact your investment portfolio. Listen to Fidelity Connects on Spotify today and power your next move tomorrow. Something You Should Know. Fascinating Intel, the world's top experts, and practical advice you can use in your life. Today, Something You Should Know with Mike Carruthers. Hey, hi, welcome to something you should know. So here's a question for you. Have you ever met someone and thought, you know, they kind of look like their name?

Starting point is 00:02:10 You know, like he kind of looks like a Ken or she looks like a Jennifer or he looks like a Jeff. Well, there might be something to this. According to a study published by the Proceedings of the National Academy of Sciences, both children and adults can tell the names of adults. by looking at pictures of them at a rate better than mere chance. But they could not tell the names of children by looking at pictures of them at a rate better than chance. So how can this be?

Starting point is 00:02:41 Well, according to researchers who conducted this, as people mature, they may alter their appearance over time to conform to cultural expectations associated with their name, without even knowing they're doing it. In other words, if your name is Susie over time, you start to look like a Susie. As further evidence of this, when they used artificial intelligence

Starting point is 00:03:05 to age photos of children to make them look like adults, people were not able to tell their names. Now, the study gets a bit complicated, and there's a link to it in the show notes if you want to read more, but it does seem that people tend to look like their names over time.

Starting point is 00:03:22 And that is something you should know. You know what a... tell is, right? You hear about tells in poker. People have these little behaviors and movements like how they hold their cards or how they look at their cards or how they place their bets. If you know how to read them, you can tell if the other player is bluffing or if he or she has a good or bad hand. But tells work in everyday life as well. There are common tells that if you know how to read them can give you insight into what other people are really thinking. That's according to my guest Peter Colette. Peter is a social psychologist who has taught at Oxford University and is widely

Starting point is 00:04:05 acknowledged to be a world expert on communication. He has been called a grandmaster of the secret code of fleeting gestures, signs, and expressions that give us all away. He's author of a book called How to Tell What People Are Thinking, from the bedroom to the boardroom. Hi, Peter, welcome to something you should know. Thank you very much. So until I saw your book, I mean, I'd never associated tells with anything other than playing cards that I thought that's kind of what it was all about. But you say it applies in everyday life, too. I do. I've requisitioned the term tell, and I've used it throughout. And I think it's very informative and illustrative and it's illuminating because, as you probably know, and a lot of your listeners will know, in order to play the game of

Starting point is 00:04:58 poker with some effectiveness, it's absolutely crucial that you do two things. One, you make sure that other people don't know what the hell you're thinking or intends to do next, and at the same time, you also try to read what kind of cards they might be holding on the basis of their behavior, what they say and do. Now, those two elements, in other words, keeping a poker face on the one hand and interpreting other people's behaviors, they are not peculiar to poker. They are general. They are applied to almost every walk of life, you know, from our love lives to our association with our friends and with our business partners and so on.

Starting point is 00:05:45 In other words, I think it's fair to say that the notion of tell applies right across the board. So explain how that works. I mean, how do tells work in everyday life, in your everyday life? If you were to say to me, oh, Peter, confess, what are your personal tells? What are your personal giveaways? I would have to say to you, there are two things that give me away. I've noticed. Now, this is not to say, for a moment, that I'm in a position to control these, by the way,

Starting point is 00:06:15 but I am in a position to recognize when I've done them. Now, the one is what I call the eye wipe. In other words, if you place your index finger underneath your eye and drag it away from your nose towards your ear, that's the gesture I call the eye wipe. And it's pretty common. I mean, Prince Charles did it right in the middle of his wedding ceremony with Diana. And I think that was a very important tell because it showed in that context that he was a troubled man. Now, just coming to me, if I may, my eye wipe, I seem to, as it were, share that particular signature tell with him. Other people have it too, but it's something that he has and that I also

Starting point is 00:07:02 do fairly commonly. So I'm able to gauge, in other words, I'm able to, as it were, read my own behavior. Not only my own behavior, but I can read the behavior of others simply on the basis of this very tiny little gesture. And what does that tell? What does that eye wipe tell tell about you? What it obviously tells me is that I'm experiencing something sad. Now, on occasions, I'll know that. I'll be watching a movie which distresses me and I find myself doing the eye wipe. But the more interesting version of that is when I don't even know that I'm sad

Starting point is 00:07:37 and I find myself doing the eye wipe and then reflecting upon that, I suddenly realize that something has crossed my mind which has saddened me. It is all to do with sadness. Do you have other tells that you know about? The other little giveaway that I have is a tendency, for example, to touch my face when I'm talking to people whom I regard as being more powerful or important than me. Now, this is a fairly common tell. It's not, as it were, a signature tell, which is peculiar to very few people.

Starting point is 00:08:13 Lots of people do it. And the reason they do it, well, there's a variety of reasons. reasons why they do it, but it's something that I do, and I've noticed myself doing it, and I now make a special point of trying to avoid doing it. Why? Because I think that even if they're not consciously acknowledging what I'm doing, other people, important people, as it were, may be able to read the fact that I'm deferring to them, that I'm aware of their position vis-à-vis me. Really? So you're saying that, like, if you touch your face when you're talking to someone in superior position like your boss or something, that you're sending a signal that you're

Starting point is 00:08:53 acknowledging that you're in an inferior position. And so you don't do that or you try not to do that because that's one of your tells. And do you think you can use these tells to tell if someone is lying to you? Well, let me put the question to you. How can you tell if somebody's lying from their body language? I don't think I could articulate it, but I sometimes think I can spot it, but I don't know what it is I'm spotting. Okay. What about patterns of gaze?

Starting point is 00:09:23 Yeah, I know. You mean like where they look? Yeah. Yeah. Or how much they look at you? Yeah. Well, I would assume the less they look at me, the more likely they are lying. You share that opinion with the majority of people. But if people don't look at you, there's a higher probability that they're lying. The other conclusion that people draw is that if somebody is fidgeting, can't sit still, then they're probably lying too.

Starting point is 00:09:51 Both of these turn out to be incorrect for very good reasons. When somebody is lying to you, they unconsciously or consciously know that there's this assumption around about gaze patterns. If I don't look at this person, he or she's going to think I'm lying. So what they do is they overreact by looking at you more. When it comes to fidgeting,

Starting point is 00:10:15 the reason why people fidget less, In fact, some liars become almost frozen in their demeanor. The reason for that is they're doing their utmost to ensure that they don't give you any information about their inner state at all. So those are the two ways in which people draw the wrong conclusions about the signals associated with lying. The interesting remark you've made about, well, I get a gut feeling about it. Now, there's actually an interesting study where they contrasted people trying to detect if others had told them the truth or lies to them are on the basis of either gut feelings or analysis of the other person's behavior.

Starting point is 00:11:02 And what they've found is that when people are directed to actually look at the tells, they're much more accurate than when they go on the basis of their gut feelings. There's a whole lot of interesting things about a lying, not least the fact that if you ask people how good they are detecting liars, most people consider themselves to be above average, but the majority of people are no better than chance. In other words, people are about as good as throwing a dice when it comes to detecting other people's lies. What about using tells in romance and specifically like, When you see somebody across the room or something,

Starting point is 00:11:49 are there tells that give you an indication that that person is interested or not? And I've heard that, you know, men are particularly bad at this. First of all, men get it wrong, by and large. But your initial question, how can you tell if somebody's got an interest in you, that has a lot to do with gaze patterns. And one of the things that happens in a romantic encounter,

Starting point is 00:12:18 when two people are, as it were, moving towards each other, one of the ways in which women and not men, one of the ways in which women indicate their interest in men, is by providing what I call an approach tell. In other words, it's permission to make the next move. And as Darwin said, sex is always a matter of female, choice. So what's the tell? The tell is a slightly prolonged look, possibly with the eyes slightly widened, possibly over the shoulder, which is a very sexy way of doing it, possibly with the

Starting point is 00:12:58 lips slightly parted, but it's infinitesimally longer than one of those mistaken glances that one gets when somebody catches your eye and then they break off. But we're pretty sensitive to that, And that, as you've indicated, is often an indication. It's often a clue to the fact that the person has some residual preparatory interest in taking things further. And it goes both ways, that slightly elongated gaze men to women and women to men? Yes, but with the proviso that when it comes to heterosexual interactions and courtship and flirtation, It's the women that call the shots. Men think they do, but they're in this regard, as so many others, they're completely mistaken.

Starting point is 00:13:50 We're talking about tells, little body language things people do, what they are and how to read them. And my guest is Peter Colette. He is author of the book How to Tell What People Are Thinking, from the Bedroom to the Boardroom. In Toronto, every arrival is a statement, and nothing says it better than this. Cadillac Optic was the number one selling luxury EV in Canada for 2025. Find your rhythm across a seamless 33-inch display and an immersive 19 speaker AKG surround audio system. This city demands agility and optic delivers with precision to make every drive extraordinary. Let's take the Cadillac.

Starting point is 00:14:24 Find out more at Cadillac Canada.ca. Luxury sales claim based on S&P Global Mobility Canadian New Vehicle Total Registrations for calendar year 2025 for the Cadillac definition of luxury. When you're a mid-sized business, you need every comprehensive. competitive advantage you can get. Like an AI solution that works for you, not against you. SAP Grow is built with AI embedded at its core, working across every system, and it's ready to go from day one so you can hit the ground running. Bring it with SAP Grow, AI Cloud ERP for any size business. So, Peter, can you run down a couple of common tells and what they mean? And one that I see frequently, I guess, is you know when people say something, it's not really shocking, but you

Starting point is 00:15:12 react as if it is, you know, you put your hand to your neck or your chest and you open your eyes and, oh my gosh, you know, this kind of fake shock. You see that a lot. It's very, it's a quite a youthful gesture, actually. This shock horror, as you've described it you know hands up eyebrows raised eyes opened jaw dropped you know there will be occasions when it's a genuine reaction to something that you've said or you've seen somebody else say but equally there will be times when it's a synthetic gesture designed to communicate something to you and one that doesn't really reflect the potency of of the signal itself in other words people are really that shocked. It's just that they want you to know that that shock in order to, as

Starting point is 00:16:06 it were, realign themselves with you. Now, if they think, for example, that you want to tell them something that's horrifying, unexpected or whatever, and in the process of doing so, they react that way, it's a kind of kindness on their behalf. It's not as though they're doing it necessarily to draw attention to themselves. They're doing that because they are thinking to themselves, not acknowledging their own thought processes, by the way. They're thinking to themselves, oh, my goodness, this is a story about something surprising.

Starting point is 00:16:40 I better look surprised. Well, I think I've done that plenty of times. We all do all the time. You do it with children a lot too, because you want them to, you want them to see your reaction to what they said So they get what your reaction is, and that's a great way to do it, is to demonstrate it as well as say it. Yeah.

Starting point is 00:17:02 Well, it is a kind of gestural conversation, isn't it? It's something that operates in parallel with what we're saying. And that, I think, is probably fair to say that that's true of almost everything we do when we're engaged in a face-to-face conversation with somebody. You know, the two lines of interaction, there's not only what we're saying and how we're saying it. But at the same time, there's all the stuff to do with tells, you know, our comportment, our orientation towards the other person, how far or close we are to them, how we rearrange our limbs, what we do with our hands and face and the whole panoply. You know, everything is going on.

Starting point is 00:17:45 Now, what's interesting, of course, is that people are reading that stuff. But that's not to say that they could necessarily articulate it. What about people's feet? I've heard that you can tell that it's a tell, that you can tell something about the person you're talking to if you look down at their feet. Yeah, the direction in which people's feet are pointing is also highly informative.

Starting point is 00:18:09 Some years ago, I was watching Crofts, the great dog competition, which has been televised, and I turned to my wife and said, you see the judge there, this was now in the final judgment, and the judge was going to decide, which of the dogs who had won their divisions was going to be top dog. And I turned to her and I said, you see the poodle on the right there? That's the one he's going to choose.

Starting point is 00:18:35 And she, fittingly, said, well, what the hell do you know about dogs? And I said, no, no, it's not about the dogs. Watch the judge's foot. His right foot is pointing right at that dog. And lo and behold, moments later, that was the dog he selected as best in show. Is it fair to say that if you're talking to someone and their feet are pointing in a direction that isn't you, that that says something? And if they are pointing at you, that also says something? Yes.

Starting point is 00:19:06 If you're chatting to somebody new, if, for example, you are concerned about whether or not they find you attractive, what to continue the conversation or whatever, it's always a good idea to look at their feet. ideally, if you extend the lines out from their toes, you should be enclosed within those two lines. On occasion, what you'll find is that the foot is pointing at somebody else, and if you watch their eyes closely, you might find them steal a glance at that person. In other words, suggesting that they probably would prefer to be chatting to the person at whom their foot is pointing. Equally, if the foot is pointing at the exit, the door, that likewise might provide clues to an intention to escape this little engagement that you've got with him presently. So there are these body language things that people do, you know, like folding your arms, right? And so the conventional wisdom is that you're putting up a barrier, that you're closing up, that that says something.

Starting point is 00:20:08 And maybe it does. but couldn't it also be you're just folding your arms and it has nothing to do with anything else? Yeah, yeah. Now, I think you're right there, by the way. I mean, there are occasions when these actions are innocent, but there are also times when by crossing your arms, you are actually establishing a barrier signal

Starting point is 00:20:32 against any intrusion by somebody else nearby. Folding arms in itself is a very, interesting gesture by the way. I mean, why don't you do so? Okay, I'm okay, I'm folding my arms. All right, you're doing it? Yes. Looking down at your arms, you will see that either your right or your left arm is on top, as it were. Now, which is it in your case? Right. My right arm is on top. Okay, just like me. Now, in other words, did you know that to be the case? Absolutely not. You never knew that you are a right over left person. Now, switch it so that the left is over the right.

Starting point is 00:21:15 It's a struggle. It requires quite a lot of thinking. It does. It really does. Have you got yourself in complete knots at this stage? No, I have to do that for two reasons. One, to illustrate the fact that a lot of our actions are completely unconscious, and there are also a whole range of things we do where we are so ingrained in our habits

Starting point is 00:21:42 that we can't actually do something that's quite different. So do most people go right over left or is it 50-50 or what? I think it's fairly even. But the point I wanted to make really was that the power of habit is all-encompassing. and we do things habitually, unthinkingly, and without any conscious awareness of what we're doing. This doesn't mean for a moment that other people aren't aware of what we're doing, even if they don't even know that they've spotted what we're doing,

Starting point is 00:22:17 because a lot of our actions can, as it were, creep in under their radar and impact on them. So we have to be on our guard, as it were, against giving, people information about our inner world simply because they're quite capable of picking up our behavior and reaching a conclusion about what kind of people we are, what kinds of thoughts and preferences we have, possibly even what we're likely to do next, purely on the basis of our non-verbal behavior. Can you pick two or three common tells and explain what they mean so that I might use that in my life?

Starting point is 00:23:00 Well, the handshake is a very interesting one. In our society, a lot of greetings, a high proportion of them are conducted via the handshake. And it's designed as a kind of egalitarian exchange. We both, as it were, you and I, when we shake hands, we both do the same thing. So it's an expression of our equality. In contrast to previous greetings, which involved. say bowing or cursing which were asymmetric you know where the subordinate as it were expressed their respect for the superior and the handshake is designed to to underline the fact that there's

Starting point is 00:23:43 no difference between us there are people of course who cannot resist the opportunity to use the handshake to gain an advantage over other people so if for example i would shake hands with you and I were to twist my hand, or I would present my hand to you, palm down, you would be forced to greet me with your hand, palm up. I would in the process have gained the upper hand, both figuratively and literally. And even though you don't really recognize it, you would have felt slightly subordinated by the practice. What I find so interesting about this is how all these tells, all these various body language things, these expressions, these gestures, we see people doing them all the time, we do them all the time.

Starting point is 00:24:38 They're communicating something and somehow it doesn't register, but it really adds to the meaning. I've been speaking with Peter Colette. He is a social psychologist and author of the book, how to tell what people are thinking, from the bedroom to the boardroom. And if you'd like to read his book, there's a link to it at Amazon and the show notes.

Starting point is 00:24:58 appreciate your time. Thanks for coming on today, Peter. Thank you, Mike. It's been an absolute pleasure. Summer heats up in FX's The Shards. Set in 80s, Los Angeles, the Shards follows a group of beautiful, privileged prep school students who are preyed on by The Trawler, a serial killer targeting teenagers across the city. This fever dream of youth, beauty, sex, and mystery is a must see. FX's The Shards, streaming August 5th. on Hulu on Disney Plus. Sign up now at Disneyplus.com.

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Starting point is 00:26:14 Lots of extremes. And they don't necessarily have anything to do with each other, except they are extreme. So someone has gathered many of these extremes together in one book and so that we can talk about them. David Darling is a science writer, astronomer and author of about 50 books, including Kaboom, The Science of Extremes. Hi, David, welcome to something you should know.

Starting point is 00:26:40 Hi, Mike. It's nice to be here. So let's start with an extreme. What is the brightest thing on Earth? Well, the brightest light on Earth is actually in Las Vegas, and it shoots up in the sky from one of the resorts there, and it's tremendously bright. In fact, it's so bright. that it attracts all the wildlife from miles around. And you can see it from a great distance away. In fact, if you're in a plane, you can see it from tens of miles away. And that's really the brightest artificial light on Earth,

Starting point is 00:27:15 except going into a laboratory, for example. And it attracts all kinds of wildlife, bats and all the insects and that type of thing. And it's tremendously hot. You can imagine the amount of energy that's required to fire this thing. up there. Beyond that, you would have to go, you know, beyond the earth, really, and into space. Where, of course, we end up with a lot of these records because that's where the brightest, the biggest, the most distant things are. Well, obviously, I think of the sun as being pretty bright, but as sun's go, as stars go, is the sun bright? There are many, many stars out there.

Starting point is 00:27:56 And all the stars that you can see in the night sky with the unaided eye are actually brighter than the sun. See maybe a couple of thousand, three thousand stars. Every single one of those stars is brighter than the sun. Some of them are thousands of times brighter, tens of thousands of times brighter. And in the most extreme cases of the biggest, most energetic stars, actually millions of times brighter than the sun. The stickiest is in your list of things you looked at, so I can't wait to hear what's the stickiest? Well, of course, a lot of insects are sticky. You see flies, for example, climbing up the side of walls, and they just appear to be sticking there.

Starting point is 00:28:45 They're not actually sticking there. There's no glue on the feet of flies or indeed any other animals. What they have is tiny little hairs. Microscopy, you would have to look under a microscope to see them. And they use these tiny hairs to grip onto any roughness in the surface. And it enables them to actually walk across the ceiling. It appears to be as if by magic. So that's a form of stickiness if you like.

Starting point is 00:29:16 And of course, the tongue of a chameleon that shoots out is also sticky as well. If you want to go beyond the stickiness in nature or apparent stickiness in nature, then you have to move on to chemicals that have been created in the laboratory. And there are some extraordinarily, extraordinarily sticky glues. One of the strongest one was used to support a truck just by using tiny little pads where the glue was connected to the wheels of the truck and lift. this thing which was several tons up in the air. It was quite remarkable actually. And you see pictures of it. It just seems impossible.

Starting point is 00:30:01 So you pick one. You pick one that you liked that you, when you came across in your research, you found particularly fascinating or that other people tell you is fascinating. Well, yeah, I like the ones where humans are involved because you can kind of, I mean, there's a lot of things to do without a space and, you know, laboratory experiments. There is actually an experiment, but it's a very simple one to explain. explain. It's also the longest running experiment in the world. So now we're talking about slow records. And this thing is called the pitch drop experiment. And it's been running since 1927 in Australia, the University of Queensland. And this professor back in the day decided he

Starting point is 00:30:43 wanted to see how fast pitch or tar, if you like, would drip. So we filled this funnel. With the tar, you know, what you put down on roads, the sticky black stuff hardly seems to move at all. And when you put this into the funnel, let it settle for a long time, in fact, for three years, and kept it under rigidly constant conditions, because of course it's going to depend on temperature and things like that. And then let it drip out. When I say let it drip out, since then, now we're talking about a century ago, there's been nine drips. from this thing. So we're talking about slow record here. The last drip was in 2014, 10 years ago. They actually have a live webcam pointing at this thing. You can see it on the internet and you can watch it. You know, so if you're patient and you're interested, you could watch this thing and maybe

Starting point is 00:31:44 see the next drop fall because nobody ever seen a drop fall. The last time it was captured on camera, but nobody's actually seen this thing happen. I like things like that. You know, they're just a little bit eccentric. What's the purpose of this? Well, very little. No, I think it was just a piece of eccentricity, actually. And it's certainly a talking point, but there's no real practical purpose to it at all. So you did an interesting comparison of computers. So tell that story.

Starting point is 00:32:14 So I used to work for a company called Cray Research, which makes, made and makes supercomputers. And so now, So now we're talking about 1980-ish, and I worked for them when they produced their first computer, the Cray 1, which was the fastest computer in the world at the time. It sold for about $7 million. And I was interested in how fast the Cray 1 was would be compared with an iPhone, because we don't really think of iPhones as being computers, but that's what they are. They're supercomputers, in fact.

Starting point is 00:32:51 So I compared the speed and the memory and the storage capacity of the Kray 1 with actually the iPhone 13, so it's not the latest model. But the iPhone 13 is 3,000 times faster than a Kray 1, a supercomputer in its day. 3,000 times the storage, 750 times the RAM. And yet the Kray costs, well, say, $8 million. That's about $38 million today. the iPhone, maybe $1,000, 2,000 times less. Absolutely extraordinary.

Starting point is 00:33:28 So that just shows how the records moved in the computing world. And really, it's unfair because we're comparing the craves is a supercomputer with a thing you carry around in your pocket. What you really have to compare it with is supercomputers today. And the fastest of those is the frontier computer at Oak Ridge National Laboratory. which is an exoflop machine. In other words, it can conduct a million trillion operations a second. So there we're talking about record speed in computers,

Starting point is 00:34:04 which obviously has a huge practical implication. Can you talk about extremes of acceleration, specifically human acceleration? Again, I'm going to take you back in time to 1895 apart. in Brooklyn, where they had the first vertical loop roller coaster. It was called a flip-flap railway. And it was quite a sensation. It had a vertical loop 25 feet high, which is quite small. And that was one of the problems with it. It was small and the biggest problem was that it was perfectly round. So you would have them coming in, you'd have the passengers coming in to this loop,

Starting point is 00:34:57 they would then enter this vertical circle, loop around it and come out again. Now the problem is going from a straight direction into a circle. They were subjected to a tremendous G force. In fact, 12 Gs, far more than an astronaut would explain. going into space or reentering. And it unfortunately caused a lot of problems, spinal injuries, serious neck injuries, because they didn't really know how to make roller coasters properly at the time. And now, of course, we know more about the physics of it. You don't do vertical circles.

Starting point is 00:35:35 You do teardrop shape curves. So you come in on a gentler angle before you go into the circle. So that was something they had to learn through experience. Of course, when we started thinking about spaceflight, we needed to see whether the human body could withstand high G forces. So that's when you started putting astronauts and test subjects into centrifuges and, you know, seeing what the limits of human tolerance are. But to really go to the extreme of what humans are capable ofwithstanding in terms of acceleration, You have to look at the experiments of John Stapp, who was a surgeon who worked for the US Air Force, and he subjected himself to extraordinary situations on a rocket sled.

Starting point is 00:36:31 And under 7 to 10th, 1954, he got on this rocket sled called Sonic Wind One and fired the rockets. and in five seconds time, he was traveling at 632 miles per hour. It's pretty faster than what an airliner would travel at cruising altitude. Not only that, but he then hit a water trough, which broke him from 632 miles per hour to zero in just over one second to the equivalent of hitting a brick wall at 120 miles an hour. And he did survive it. Let's talk about loudest and quietest records for those. Yes, loudest. One of the loudest things that humans had built was actually an aircraft and not a jet aircraft. It was a propeller aircraft, a plot plane. It's called the thunder screech. Well, that was its nickname anyway. And it was tremendously loud. You could hear it 25 miles away when it was just, you know, running on the ground with its propellers turning. And the real. And the real thing. And the real thing.

Starting point is 00:37:40 reason for that is that propellers turned at supersonic speeds and they produced a sound of about 200 decibels which is pretty close to what you would get from a rocket taking off. It was tremendously loud and it caused all kinds of problems. The ground engineers are all suffering from nausea and this type of thing. But there are natural sounds which are even greater than that and one of them for example would be the explosion of Crackatoa, the island of Crackatoa in 1883, which is reckoned to have made a sound of 310 decibels and could be heard 3,000 miles away. Now, I say 310 decibels, there's a physical limit to loudness, actually. A sound of 194 decibels. Beyond that is not really sound as we know

Starting point is 00:38:39 as a series of supersonic pulses. So there's that really at that point, it stops being loudness. It turns into something else. And quietest? What would, I would think silence is silence? So the quietest places are really places that are made specifically to be quiet, which are called anechoic chambers. And these basically absorb all the sound that you can produce immediately.

Starting point is 00:39:09 So you get no sound coming back to you whatsoever. And these places are actually very difficult to tolerate because we're so used to having even, you know, slight sounds in the background. It's not a natural situation to be in. And so people can't tolerate this very long because you start to hear your own heartbeat, breathing, and even sounds made that you never normally hear, but, you know, your own muscles creaking and things like this. And it becomes very, very disconcerting.

Starting point is 00:39:41 And so they do have some of these anechoic chambers open to the public, but they limit how long people can spend in them because, you know, you start to hallucinate after a while and go crazy because it's a very, very, very, very unsettling experience. Well, where are these things and who made them and why? Well, they make them for carrying out all sorts of experiments, for example, on hi-fi equipment or there's all sorts of situations where you don't want any. sound coming back at you. There is one at Bell Labs, for example. They're usually at major laboratories, quite a few in the US. There's some in Europe as well. And they're just used for carrying out scientific experiments. Let's talk about largest. What's the largest thing that we have? So locally, the sun is the largest thing. We can then move beyond the sun out into to the galaxy and we find other stars, some of which are immensely bigger than the sun.

Starting point is 00:40:45 They can be hundreds times, thousands of times bigger than the sun. But then what's bigger than that? Well, the whole collection of stars that we live in, which is the galaxy, which is 100,000 light years across. That means that it takes light 100,000 years to get from one side to another. Is there anything bigger than the galaxy? Well, you get clusters of galaxies. We live in a cluster of galaxies called the local group, which has 30-odd galaxies in it.

Starting point is 00:41:16 And that is 10, 15 million light years across. Surely that's the biggest thing there is. But no, you can get clusters of clusters of galaxies, which are called superclusters. And you can go beyond this to great walls of galaxies, which can be billions of light years across. The largest structure in the universe is about 10 billion light years across. Is there anything bigger than that? Well, beyond that, you would have to go to the universe itself, which is about 90 billion light years across. You've got some weird extremes in here. And so talk about the one about reverberation.

Starting point is 00:42:00 I live in Dundee on the east coast of Scotland and about 15, 20 minutes drive away from here, there's a little town called Cooper. And in that town, there is this silo. It's 200 feet high. It's a concrete silo, and it used to be used for storing sugar beet. It's disused now, so it's empty. And in fact, it's not really open to the public because it's quite dangerous. But they do occasionally open it up.

Starting point is 00:42:26 And for an interesting reason, this silo, when you make a sound in it, for example, clap your hands, the sound takes over 30 seconds to die away. In other words, it's a tremendously reverberate space. It's one of the longest reverberation times of any human-made space. And they even hold concerts in there, very unusual concerts, I might add, because, of course, as soon as you make a sound, that sound is going to carry on for a long time. So you have to come up with a composition that works in that sort of environment. So that's very interesting to me, this whole idea of reverberation. There are bigger reverberation spaces, but this one happens to be nearby, so I have a particular fascination for it.

Starting point is 00:43:12 Talk about poisons. What's the most poisonous thing? Of course, in the past, poisons were used for getting rid of people you didn't like. There were obviously things like strychnine and arsenic and those sort of things. You could actually pay people, this is going back into sort of late medieval. Brenzance, Europe, to dispose of people you didn't want by getting some of these substances. But as time goes on, we found there are more and more poisonous things. I can think of, for example, the poison arrow frog. You can just touch a poison arrow frog and make the mistake of putting that

Starting point is 00:43:52 into your mouth, and that can be lethal. The puffer fish, for example, which is found off the coast of Japan and is considered a delicacy in Japan, but it has to be cooked properly because if it isn't, again, it's deadly. So chefs that serve puffer fish have to have three years of training before they'll be allowed to prepare a meal of this for the public. If you want to go to the most poisonous things of all, you're talking about bacterial toxins, botulin and this sort of thing, which are so poisonous that they are, they're deadly in microscopic amounts. So the botulin toxin is actually the most poisonous substance we know, and it takes a microscopic amount of it to kill a person.

Starting point is 00:44:45 Well, this was kind of fun to take a bunch of relatively unrelated topics and put him under the umbrella of extremes so we could talk about them. And we've been talking about them with David Darling. He is a science writer, astronomer, and author of the book, Kaboom, The Science of Extremes. And there's a link to his book in the show notes. Thank you, David. Thanks very much, Mike, for having me on your show. It's been great fun, and thank you.

Starting point is 00:45:12 How could singing Happy Birthday make birthday taste better? Well, according to research from the University of Minnesota, rituals like singing Happy Birthday trigger what psychologists call our intrinsic. interest, and that heightens our feel-good senses, including taste and smell. This same intrinsic interest trick can also work with saying grace or a prayer before taking the first bite of a meal or proposing a toast before savoring that first sip of something. And that is something you should know. If you have on your to-do list maybe a little extra space, a little extra time,

Starting point is 00:45:52 you might want to write this down, to tell two people, two people about this podcast. share the link and tell them to listen. I'm Mike Herrothers. Thanks for listening today to something you should know. Hey, y'all. It's Kelly Clarkson with Wayfair. Ever order furniture online and wonder what if? Like, what if doesn't hold up? That sofa was four days old. You should have ordered from Wayfair. With Wayfair, there's no what if. Just style you love and quality you can trust. Visit Wayfair.ca. Wayfair, every style, every home.

Starting point is 00:46:20 I know you like interesting and thought-provoking conversations and ideas because you listen to something you should know. So let me recommend another podcast. I know you will enjoy. It's the Jordan Harbinger Show. Jordan has a real talent for getting his guests to share stories and offer thought-provoking insights. Over the years, I've sent a lot of people to listen, and I get feedback from people who are so glad I introduce them to the Jordan Harbinger Show. Recently, he discussed Scientology and the children who are raised in that organization. It's a fascinating conversation. And he talked to you. talked with Dr. Rhonda Patrick about how to protect your mind and body from the modern world. And it's tougher than you think. I've gotten to know Jordan pretty well. We talk frequently,

Starting point is 00:47:08 and I tell you, he is a very smart, insightful guy who does a hell of a podcast. Check out the Jordan Harbinger Show on Apple Podcast, Spotify, or wherever you listen to podcasts.

Something You Should Know - How to Read People & The Most Extreme Things on Earth – SYSK Choice

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