Once Upon a Stranger by Gillian Sandstrom The Science of How Small Talk Can Add Up to a Big Life
What's it about?
Once Upon a Stranger (2026) makes the case that brief, low-stakes exchanges with strangers are an antidote to the loneliness epidemic of modern life. Drawing on original research and personal anecdotes, it shows how even the smallest moments of connection – with a barista, a fellow commuter, a stranger in an elevator – can generate joy, curiosity, and a deeper sense of belonging.
Narrated by…. You’re standing in line at a coffee shop. The person in front of you is wearing a t-shirt from a city you once visited. You notice it, feel a small flicker of curiosity – and then look back down at your phone.
Sound familiar? Most of us have been there. And most of us have decided, without really thinking about it, that talking to that stranger just isn’t worth it. They probably don’t want to be bothered. It’ll be awkward. What would you even say?
Better to keep to yourself. But what if that instinct is wrong – and what if it’s costing you more than you realize? Gillian Sandstrom has spent her career studying the tiny, fleeting conversations we have with people we don’t know. And what she’s found is striking: these micro-interactions – with the person behind you in line, the stranger on the subway – aren’t trivial.
They’re a surprisingly potent source of joy, creativity, and human connection. And our reluctance to initiate them is rooted less in social reality than in a set of fears that science consistently shows are overblown. In this lesson, you’ll discover how brief encounters with strangers can spark creativity, ease loneliness, and even change the direction of your life. All it takes to get started is a single word: hello.
After a promising meeting with a potential research collaborator, psychologist Erica Boothby walked away convinced she’d blown it. Meanwhile, her husband, who’d overheard the whole thing, was baffled. From where he sat, Erica had come across as thoughtful, sharp, and engaging. How could two people have such radically different readings of the exact same conversation?
That question became the seed of one of the most consistently replicated findings in social psychology: the liking gap. In study after study, when two strangers have a conversation, both people walk away thinking their conversation partner liked them considerably less than they actually did. The culprit behind the liking gap is a kind of internal critic – a negative inner voice that narrates our social interactions in the least flattering terms possible. While our conversation partner is busy noticing our warmth and wit, we’re busy cataloguing every stumble and silence. The fear of rejection looms especially large in people’s imaginations. But the data here is reassuring.
In one study, commuters in Chicago predicted that fewer than half of the people on their train would be willing to talk to them. Yet not a single person reported being turned away when they tried to initiate conversation. In a larger study involving nearly 200 participants and over a thousand attempted conversations, the rejection rate was just 13 percent – and many of those “rejections” were simply polite nonstarters easily explained by distraction or a bad day rather than genuine dislike. What about unspoken social rules that seem to forbid stranger-talk – the “no talking on the Tube” norm in London, or the urban instinct to “mind your own business? ” These rules turn out to be far more fragile than they appear. People break them constantly – for dogs, for tourists, for crossword puzzles.
They seem less like actual social prohibitions and more like elaborate protective mechanisms, ways of avoiding the small risk of rejection by preemptively opting out. One final anxiety worth addressing is the introvert’s objection: surely all of this is easier for naturally outgoing people? The evidence says otherwise. Introverts do tend to feel more nervous before social interactions, but they show no meaningful deficit in actual social skill.
And they tend to enjoy conversations with strangers just as much as extroverts do once those conversations are underway. As an introvert, it can help to simply “fake it till you make it” – act in a more extroverted way by being a little more talkative and spontaneous. The inner critic, it seems, is the real barrier. And that’s something everyone can learn to challenge.
Gillian Sandstrom had just gotten divorced. And she was in the mood to reclaim something she’d suppressed throughout her marriage: her love of classical music. So she drove six and a half hours by herself to a classical music festival in Massachusetts, and on her first evening, decided to climb a war memorial tower to watch the sunset. That’s where she met Floyd.
She wasn’t yet in the habit of talking to strangers, but something about the view made it feel natural. He had a book in his hand, so she asked what he was reading. One thing led to another, and when Floyd mentioned he was going hiking the next day, she invited herself along. It turned out to be a five-hour hike – far more than she’d bargained for. But by the end of it, she felt something she hadn’t felt in years: truly accepted for who she was. She never saw Floyd again.
What made that conversation so powerful? Part of it was simply the act of opening up – talking honestly to someone who had no history with her, no agenda, and no stake in what she said. Humans are remarkably fond of talking about themselves. In fact, researchers at Harvard have found that people will literally give up money to do it. In a clever experiment, participants were given choices between answering questions about themselves or answering higher-paying trivia questions. Again and again, people chose self-disclosure over the bigger payout, forfeiting around 17 percent of potential earnings.
We crave opening up, but it can also feel terrifying. Fortunately, those fears are overblown. Research shows that people like us more, not less, when we open up. And when someone else takes the risk of being vulnerable – apologizing, asking for help, admitting a mistake – we tend to see it as courageous and admirable. The catch is that when we’re the ones being vulnerable, we tend to see it as weakness. That double standard keeps us far more guarded than we need to be.
That very guardedness, however, makes strangers ideal confidants – thanks to a concept called psychological distance. A stranger can’t gossip to mutual friends, won’t bring up your disclosure at an awkward moment later, and has no personal stake in your situation. This distance also makes them better advice-givers. Research shows people make wiser decisions for others than for themselves, free from the cloud of self-interest. Strangers, it turns out, aren’t just safe to open up to – they might be the best people to open up to.
“If you were both to die at the same time, who would you like to raise your children? ” Not exactly the kind of question that inspires a career epiphany. But that’s exactly what happened to Sandstrom – then a twentysomething computer programmer sitting in a lawyer’s office, drafting a will she didn’t really need yet. While squirming in a stiff chair and trying to take her own mortality seriously, she noticed the lawyer’s diploma on the wall and made a casual remark about it.
What came next changed everything. The lawyer proudly shared that she’d only recently entered law – in her fifties. That single, offhand revelation cracked open a door Sandstrom hadn’t even realized she’d been standing in front of. She’d spent a decade in tech and couldn’t imagine walking away. But suddenly, someone had handed her a missing puzzle piece – proof that reinvention was possible. That chance encounter eventually led Sandstrom to return to school, earn a PhD in psychology, and build an entirely new career studying the science of human connection.
The insight from this story is that every person we meet is potentially carrying a piece of someone else’s puzzle. Sometimes they know it. Usually they don’t. Rabbi Lawrence Kushner wrote that when we share something of ourselves with another person – even something that feels worthless to us – we become, knowingly or not, a kind of messenger. Curiosity is a big part of what draws us toward strangers in the first place. More than 95 percent of individuals admit to people-watching, and over half do it daily.
Eavesdropping and imagining the lives behind strangers’ windows isn’t idle nosiness. Understanding other people helps us make sense of the world, which in turn makes us feel safer. Despite this powerful drive, we routinely hold ourselves back from satisfying our social curiosity. Fear keeps us from the very interactions that would make us feel more connected. The cost of that self-censorship is real. Research by psychologist Matthias Mehl found that what makes a conversation feel meaningful – rather than merely pleasant – is learning something new.
And yet, research consistently shows that people underestimate how much they’ll learn from talking to a stranger. For instance, a study designed by Sandstrom found that roughly one in three stranger conversations involved genuine learning. Each conversation adds a piece to the puzzle of how we understand the world, other people, and ourselves. And occasionally – as with a young programmer in a lawyer’s office – one of those pieces clicks into place and changes everything.
When Gillian Sandstrom left behind her decade-long career as a computer programmer to start a master’s in psychology, she felt like an imposter. She was ten years older than most of her classmates and unaccustomed to big cities like Toronto. Then, gradually, something shifted. Each week, walking between buildings, she’d pass a hot dog stand.
One day, the woman working there smiled and waved. Sandstrom smiled and waved back. That was it – no conversation, no names exchanged. Sandstrom never bought a hot dog, even once. But from that moment on, something small and important happened: she felt seen. If the hot dog lady wasn’t there on a given day, things felt subtly off.
Her presence and recognition had woven Sandstrom into the fabric of campus life. These small interactions might seem trivial, but they’re not. In a study Sandstrom later designed, she asked customers at a Starbucks to chat briefly with the barista while ordering. Others were told to be efficient: have their money ready, skip the pleasantries. Customers who had chatted came away in a better mood and feeling more connected than those who didn’t. Connection doesn’t require depth.
Sometimes it just requires acknowledgment. And yet we routinely fail to offer it. We order coffee while scrolling on our phones and ride buses without glancing at the driver. Sandstrom recalls visiting Winchester Cathedral and asking the greeter how he was doing. His response was heartbreaking: “Nobody ever asks me that. It’s my job to ask you that question.
You’ve made my day. ” We overlook people constantly – and the cumulative effect is a world where many move through their days feeling functionally invisible. The flip side is equally striking. In a study at a university campus, a researcher walked past people and either made eye contact or looked away. Those who received a glance – just a glance – reported feeling 25 percent less disconnected afterward. Sometimes being seen can do far more than lift someone’s mood.
The UK charity Samaritans has built an entire initiative around this principle. “Small Talk Saves Lives” trains railway staff to engage with people who appear to be struggling – not to have deep conversations, just to ask a light question. One woman named Billy Lezra was about to jump in front of a subway train when a pink-haired stranger asked her to take a photo. That momentary recognition changed the direction of her day, and eventually her life. Years later, in recovery and sober, Billy now offers to take photos of strangers, describing the jolt of connection as something that makes being alive feel like it matters.
At a psychology conference in 2019, Sandstrom did something that would have been unthinkable to her younger self: she raised her hand in a room full of strangers and asked a question. Later, she walked up to the speaker, introduced herself, and cheekily hinted that she’d love to give a talk at his university. Two years later, that chain of small, uncomfortable acts led to a job offer running the Sussex Center for Research on Kindness. And none of it would have been possible if she hadn’t spent a decade talking to strangers.
Sandstrom calls this cumulative transformation a “skeleton key” – a single tool that can unlock many doors. Talking to strangers builds social confidence, helps us get more comfortable with rejection and uncertainty, teaches us to notice the world more clearly, and gradually shifts how we see other people. These benefits don’t arrive all at once. They accumulate, conversation by conversation, like interest building in an account you barely knew you had. To test how quickly these benefits kick in, Sandstrom and two other researchers designed a week-long scavenger hunt study. Nearly 200 participants were given simple missions: find someone wearing a hat, find someone drinking a coffee.
The catch was that to complete each mission, they had to approach that person and have a conversation. Over the course of a week, participants had 1,336 conversations and reported enjoying roughly 90 percent of them. By the end of the week, something measurable had shifted: participants were less afraid of rejection, more confident in their social skills, and warmer in their feelings toward strangers. A follow-up check one week later showed those shifts holding steady. The benefits of these conversations didn’t arrive all at once – they accumulated gradually. One reason people need repeated practice is that a single good conversation doesn’t seem to update our expectations.
Studies show that right after having a pleasant chat with a stranger, people still predict that their next conversation will go poorly. Only after stacking up enough positive experiences do people begin to notice the pattern and push back against that pessimistic inner narrative. Perhaps the deepest payoff of talking to strangers is the simplest: it gradually changes how you see other people. Where Sandstrom once saw a street full of potential threats, she now sees a street full of potential. That shift in worldview, she says, is the single biggest benefit of all. And it transfers.
It shows up when you raise your hand in a meeting, comfort a struggling friend, or ask for something you want. The skeleton key doesn’t just open doors to strangers. It opens doors to a braver version of yourself.
The main takeaway of this lesson to Once Upon a Stranger by Gillian Sandstrom is that nearly every fear we have about talking to strangers – that they won’t like us, that they’ll reject us, that we’ll embarrass ourselves – is dramatically overblown. Strangers are not just safe to engage with; they can see us when we feel invisible, receive our vulnerability without judgment, and hand us puzzle pieces we didn’t know we were missing. So the next time you feel the impulse to say something to the person next to you, whether it’s on the train or in line at the grocery store, trust that impulse. What’s on the other side is almost always worth the risk.
Once Upon a Stranger (2026) makes the case that brief, low-stakes exchanges with strangers are an antidote to the loneliness epidemic of modern life. Drawing on original research and personal anecdotes, it shows how even the smallest moments of connection – with a barista, a fellow commuter, a stranger in an elevator – can generate joy, curiosity, and a deeper sense of belonging.
Narrated by…. You’re standing in line at a coffee shop. The person in front of you is wearing a t-shirt from a city you once visited. You notice it, feel a small flicker of curiosity – and then look back down at your phone.
Sound familiar? Most of us have been there. And most of us have decided, without really thinking about it, that talking to that stranger just isn’t worth it. They probably don’t want to be bothered. It’ll be awkward. What would you even say?
Better to keep to yourself. But what if that instinct is wrong – and what if it’s costing you more than you realize? Gillian Sandstrom has spent her career studying the tiny, fleeting conversations we have with people we don’t know. And what she’s found is striking: these micro-interactions – with the person behind you in line, the stranger on the subway – aren’t trivial.
They’re a surprisingly potent source of joy, creativity, and human connection. And our reluctance to initiate them is rooted less in social reality than in a set of fears that science consistently shows are overblown. In this lesson, you’ll discover how brief encounters with strangers can spark creativity, ease loneliness, and even change the direction of your life. All it takes to get started is a single word: hello.
After a promising meeting with a potential research collaborator, psychologist Erica Boothby walked away convinced she’d blown it. Meanwhile, her husband, who’d overheard the whole thing, was baffled. From where he sat, Erica had come across as thoughtful, sharp, and engaging. How could two people have such radically different readings of the exact same conversation?
That question became the seed of one of the most consistently replicated findings in social psychology: the liking gap. In study after study, when two strangers have a conversation, both people walk away thinking their conversation partner liked them considerably less than they actually did. The culprit behind the liking gap is a kind of internal critic – a negative inner voice that narrates our social interactions in the least flattering terms possible. While our conversation partner is busy noticing our warmth and wit, we’re busy cataloguing every stumble and silence. The fear of rejection looms especially large in people’s imaginations. But the data here is reassuring.
In one study, commuters in Chicago predicted that fewer than half of the people on their train would be willing to talk to them. Yet not a single person reported being turned away when they tried to initiate conversation. In a larger study involving nearly 200 participants and over a thousand attempted conversations, the rejection rate was just 13 percent – and many of those “rejections” were simply polite nonstarters easily explained by distraction or a bad day rather than genuine dislike. What about unspoken social rules that seem to forbid stranger-talk – the “no talking on the Tube” norm in London, or the urban instinct to “mind your own business? ” These rules turn out to be far more fragile than they appear. People break them constantly – for dogs, for tourists, for crossword puzzles.
They seem less like actual social prohibitions and more like elaborate protective mechanisms, ways of avoiding the small risk of rejection by preemptively opting out. One final anxiety worth addressing is the introvert’s objection: surely all of this is easier for naturally outgoing people? The evidence says otherwise. Introverts do tend to feel more nervous before social interactions, but they show no meaningful deficit in actual social skill.
And they tend to enjoy conversations with strangers just as much as extroverts do once those conversations are underway. As an introvert, it can help to simply “fake it till you make it” – act in a more extroverted way by being a little more talkative and spontaneous. The inner critic, it seems, is the real barrier. And that’s something everyone can learn to challenge.
Gillian Sandstrom had just gotten divorced. And she was in the mood to reclaim something she’d suppressed throughout her marriage: her love of classical music. So she drove six and a half hours by herself to a classical music festival in Massachusetts, and on her first evening, decided to climb a war memorial tower to watch the sunset. That’s where she met Floyd.
She wasn’t yet in the habit of talking to strangers, but something about the view made it feel natural. He had a book in his hand, so she asked what he was reading. One thing led to another, and when Floyd mentioned he was going hiking the next day, she invited herself along. It turned out to be a five-hour hike – far more than she’d bargained for. But by the end of it, she felt something she hadn’t felt in years: truly accepted for who she was. She never saw Floyd again.
What made that conversation so powerful? Part of it was simply the act of opening up – talking honestly to someone who had no history with her, no agenda, and no stake in what she said. Humans are remarkably fond of talking about themselves. In fact, researchers at Harvard have found that people will literally give up money to do it. In a clever experiment, participants were given choices between answering questions about themselves or answering higher-paying trivia questions. Again and again, people chose self-disclosure over the bigger payout, forfeiting around 17 percent of potential earnings.
We crave opening up, but it can also feel terrifying. Fortunately, those fears are overblown. Research shows that people like us more, not less, when we open up. And when someone else takes the risk of being vulnerable – apologizing, asking for help, admitting a mistake – we tend to see it as courageous and admirable. The catch is that when we’re the ones being vulnerable, we tend to see it as weakness. That double standard keeps us far more guarded than we need to be.
That very guardedness, however, makes strangers ideal confidants – thanks to a concept called psychological distance. A stranger can’t gossip to mutual friends, won’t bring up your disclosure at an awkward moment later, and has no personal stake in your situation. This distance also makes them better advice-givers. Research shows people make wiser decisions for others than for themselves, free from the cloud of self-interest. Strangers, it turns out, aren’t just safe to open up to – they might be the best people to open up to.
“If you were both to die at the same time, who would you like to raise your children? ” Not exactly the kind of question that inspires a career epiphany. But that’s exactly what happened to Sandstrom – then a twentysomething computer programmer sitting in a lawyer’s office, drafting a will she didn’t really need yet. While squirming in a stiff chair and trying to take her own mortality seriously, she noticed the lawyer’s diploma on the wall and made a casual remark about it.
What came next changed everything. The lawyer proudly shared that she’d only recently entered law – in her fifties. That single, offhand revelation cracked open a door Sandstrom hadn’t even realized she’d been standing in front of. She’d spent a decade in tech and couldn’t imagine walking away. But suddenly, someone had handed her a missing puzzle piece – proof that reinvention was possible. That chance encounter eventually led Sandstrom to return to school, earn a PhD in psychology, and build an entirely new career studying the science of human connection.
The insight from this story is that every person we meet is potentially carrying a piece of someone else’s puzzle. Sometimes they know it. Usually they don’t. Rabbi Lawrence Kushner wrote that when we share something of ourselves with another person – even something that feels worthless to us – we become, knowingly or not, a kind of messenger. Curiosity is a big part of what draws us toward strangers in the first place. More than 95 percent of individuals admit to people-watching, and over half do it daily.
Eavesdropping and imagining the lives behind strangers’ windows isn’t idle nosiness. Understanding other people helps us make sense of the world, which in turn makes us feel safer. Despite this powerful drive, we routinely hold ourselves back from satisfying our social curiosity. Fear keeps us from the very interactions that would make us feel more connected. The cost of that self-censorship is real. Research by psychologist Matthias Mehl found that what makes a conversation feel meaningful – rather than merely pleasant – is learning something new.
And yet, research consistently shows that people underestimate how much they’ll learn from talking to a stranger. For instance, a study designed by Sandstrom found that roughly one in three stranger conversations involved genuine learning. Each conversation adds a piece to the puzzle of how we understand the world, other people, and ourselves. And occasionally – as with a young programmer in a lawyer’s office – one of those pieces clicks into place and changes everything.
When Gillian Sandstrom left behind her decade-long career as a computer programmer to start a master’s in psychology, she felt like an imposter. She was ten years older than most of her classmates and unaccustomed to big cities like Toronto. Then, gradually, something shifted. Each week, walking between buildings, she’d pass a hot dog stand.
One day, the woman working there smiled and waved. Sandstrom smiled and waved back. That was it – no conversation, no names exchanged. Sandstrom never bought a hot dog, even once. But from that moment on, something small and important happened: she felt seen. If the hot dog lady wasn’t there on a given day, things felt subtly off.
Her presence and recognition had woven Sandstrom into the fabric of campus life. These small interactions might seem trivial, but they’re not. In a study Sandstrom later designed, she asked customers at a Starbucks to chat briefly with the barista while ordering. Others were told to be efficient: have their money ready, skip the pleasantries. Customers who had chatted came away in a better mood and feeling more connected than those who didn’t. Connection doesn’t require depth.
Sometimes it just requires acknowledgment. And yet we routinely fail to offer it. We order coffee while scrolling on our phones and ride buses without glancing at the driver. Sandstrom recalls visiting Winchester Cathedral and asking the greeter how he was doing. His response was heartbreaking: “Nobody ever asks me that. It’s my job to ask you that question.
You’ve made my day. ” We overlook people constantly – and the cumulative effect is a world where many move through their days feeling functionally invisible. The flip side is equally striking. In a study at a university campus, a researcher walked past people and either made eye contact or looked away. Those who received a glance – just a glance – reported feeling 25 percent less disconnected afterward. Sometimes being seen can do far more than lift someone’s mood.
The UK charity Samaritans has built an entire initiative around this principle. “Small Talk Saves Lives” trains railway staff to engage with people who appear to be struggling – not to have deep conversations, just to ask a light question. One woman named Billy Lezra was about to jump in front of a subway train when a pink-haired stranger asked her to take a photo. That momentary recognition changed the direction of her day, and eventually her life. Years later, in recovery and sober, Billy now offers to take photos of strangers, describing the jolt of connection as something that makes being alive feel like it matters.
At a psychology conference in 2019, Sandstrom did something that would have been unthinkable to her younger self: she raised her hand in a room full of strangers and asked a question. Later, she walked up to the speaker, introduced herself, and cheekily hinted that she’d love to give a talk at his university. Two years later, that chain of small, uncomfortable acts led to a job offer running the Sussex Center for Research on Kindness. And none of it would have been possible if she hadn’t spent a decade talking to strangers.
Sandstrom calls this cumulative transformation a “skeleton key” – a single tool that can unlock many doors. Talking to strangers builds social confidence, helps us get more comfortable with rejection and uncertainty, teaches us to notice the world more clearly, and gradually shifts how we see other people. These benefits don’t arrive all at once. They accumulate, conversation by conversation, like interest building in an account you barely knew you had. To test how quickly these benefits kick in, Sandstrom and two other researchers designed a week-long scavenger hunt study. Nearly 200 participants were given simple missions: find someone wearing a hat, find someone drinking a coffee.
The catch was that to complete each mission, they had to approach that person and have a conversation. Over the course of a week, participants had 1,336 conversations and reported enjoying roughly 90 percent of them. By the end of the week, something measurable had shifted: participants were less afraid of rejection, more confident in their social skills, and warmer in their feelings toward strangers. A follow-up check one week later showed those shifts holding steady. The benefits of these conversations didn’t arrive all at once – they accumulated gradually. One reason people need repeated practice is that a single good conversation doesn’t seem to update our expectations.
Studies show that right after having a pleasant chat with a stranger, people still predict that their next conversation will go poorly. Only after stacking up enough positive experiences do people begin to notice the pattern and push back against that pessimistic inner narrative. Perhaps the deepest payoff of talking to strangers is the simplest: it gradually changes how you see other people. Where Sandstrom once saw a street full of potential threats, she now sees a street full of potential. That shift in worldview, she says, is the single biggest benefit of all. And it transfers.
It shows up when you raise your hand in a meeting, comfort a struggling friend, or ask for something you want. The skeleton key doesn’t just open doors to strangers. It opens doors to a braver version of yourself.
The main takeaway of this lesson to Once Upon a Stranger by Gillian Sandstrom is that nearly every fear we have about talking to strangers – that they won’t like us, that they’ll reject us, that we’ll embarrass ourselves – is dramatically overblown. Strangers are not just safe to engage with; they can see us when we feel invisible, receive our vulnerability without judgment, and hand us puzzle pieces we didn’t know we were missing. So the next time you feel the impulse to say something to the person next to you, whether it’s on the train or in line at the grocery store, trust that impulse. What’s on the other side is almost always worth the risk.
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