Can You Ever Truly Know Another Person?

Added: 2026-05-13

[00:00:00]Think about the person you're closest to in the world. Maybe it's your partner.

[00:00:04]Someone you've slept next to for years.

[00:00:06]Someone who knows your coffee order, your fears, your worst memories, someone you've cried in front of. Someone you'd call at 3:00 a.m. if everything fell apart. Now ask yourself this. What are they thinking right now? Not what you'd guess. Not what they'd probably say.

[00:00:21]What is actually happening inside their head at this exact moment? You have no idea, and you never will. Here's the problem nobody talks about. You have never once experienced life from inside another person's body. Not for a single second. Every relationship you've ever had, every friendship, every love story has been conducted entirely through signals, words, facial expressions, tone of voice, the way someone squeezes your hand. You are reading their output. The actual person, the thoughts, the feelings, the private monologue running behind their eyes every waking hour of their life. that is completely sealed off from you. Always has been, always will be. Philosophers have a name for this. They call it the problem of other minds. And it's been keeping serious thinkers up at night for centuries.

[00:01:09]Because when you really sit with it, you realize you can't even prove other people are conscious. You know you are conscious because you're experiencing it right now. But everyone else, you're taking it on faith. Now, most people hear that and dismiss it. Obviously, other people are conscious. Don't be ridiculous. And fine, they probably are.

[00:01:29]But that's not actually the unsettling part. The unsettling part is what happens. Even when you accept that the person in front of you is fully real, fully conscious, fully there, you still can't get in. You are always at some fundamental level guessing. Think about how many times someone you loved surprised you. Not in a fun way, in the way that made you sit there afterwards thinking, "I didn't know them at all." A parent you find out had an entire life before you were born that they never mentioned. A friend who seemed fine until one day they weren't. A partner who told you they were happy and meant it and also wasn't. Not lying, just living in a layer of themselves they hadn't found the words for yet. People aren't hiding things from you on purpose. They're hiding things from themselves. There's a concept in psychology called the Johari window. The idea is that your personality has four sections. What you know about yourself and share with others. What you know but keep private. What others see in you that you can't see yourself. And then the fourth one, the part nobody knows.

[00:02:30]Not you. Not the people closest to you.

[00:02:32]A blind spot so deep it doesn't have a name yet. Every person you've ever met is walking around with that fourth quadrant fully intact, including you.

[00:02:41]There are things happening in your own psychology right now that no therapist, no partner, no best friend has ever touched. Things you don't have the language for. things that only surface under conditions you haven't encountered yet. You don't fully know yourself. So, what chance do you have with anyone else? And it goes deeper than psychology. Memory, which is basically the entire foundation of how we know people, is unreliable in ways that should disturb us more than it does. You don't remember your best friend the way they actually are. You remember a version of them constructed from thousands of individual moments filtered through your own mood at the time, reshaped every time you recall them, quietly edited by everything that happened after. Scientists have shown that every time you retrieve a memory, you alter it slightly. You are reconstructing something from loose parts, and every reconstruction changes the original just a little. The person you think you know is partly a story you've been writing about them for years, updated constantly, and they're doing the exact same thing to you. So, here's where it gets genuinely strange.

[00:03:42]You've probably been in a relationship, any kind, friendship, romantic, family, where the other person said something like, "You don't really know me." And your instinct was to push back. Of course, I do. I know everything about you. But they might have been right. Not because they were hiding something dramatic, but because there are parts of every person that only exist under specific conditions. Pressure reveals things comfort never does. Loss changes people in ways that can't be predicted.

[00:04:08]The version of your partner who exists during a crisis is a different person neurologically and emotionally than the one sitting across from you at dinner.

[00:04:16]You haven't met all of them yet. You might never, and they haven't met all of you either. There's a quote from novelist Marilyn Robinson that goes something like this. We are each of us such a limited brief experience. She's talking about the sheer smallalness of the window we have into any other life.

[00:04:34]You get a sliver, a partial view. You get the version of someone that exists in your presence and that's a fundamentally different creature from who they are alone or with their mother or during the years before they met you.

[00:04:46]The person your partner is at work. The person your best friend is in their own head at midnight. the person your father was at 25, before you existed, before the life he chose shaped him into whoever he became. You have never met those people. Here's the thing that doesn't get said enough in conversations like this. Maybe that's not a tragedy.

[00:05:05]There's a researcher named Arthur Iran who in 1997 designed an experiment to see if two strangers could create genuine closeness in a single lab session. His method was simple. Ask increasingly personal questions. Build slowly. Let people be seen in layers.

[00:05:23]The results were startling. People who sat across from each other asking questions like, "What would constitute a perfect day for you?" or "When did you last cry and why?" reported feeling genuinely close to someone they had met 45 minutes earlier. One pair from the study eventually got married. What Aaron found wasn't that we can know each other completely. It was that the act of trying, the reaching, the willingness to ask an answer honestly creates something real even in the absence of certainty.

[00:05:50]Maybe knowing someone was never the point. Maybe the point is the attempt.

[00:05:54]Because here's what's true. Every person you love, you love based on incomplete information. You made a decision, consciously or not, to attach yourself to a mystery. To say, "I don't have access to everything happening inside you, and I'm here anyway." That's what relationships are. There's something almost more meaningful about that than certainty would be. If you could download every thought your partner ever had, every buried fear, every private resentment, every thing they felt but never said, would that be intimacy? Or would it just be surveillance? The gap between two people isn't a problem to be solved. It's where trust lives. It's where curiosity lives. The reason you can know someone for 40 years and still occasionally be surprised by them, still learn something new, still catch them doing something that makes you think there you are, is because they were never a finished thing to begin with.

[00:06:44]Neither were you. So, can you ever truly know another person? Probably not, not fully, not completely. But maybe that's the wrong definition of knowing. We use the word no like it's a destination, like there's a point you arrive at where the mystery is solved and the person is fully understood and you can finally stop paying attention. But that's not how anything worth knowing actually works. You don't know a piece of music that way. You can listen to the same song 500 times and still hear something new on the 501st. A note you missed. A lyric that hits differently now that you're older. A silence between two beats that suddenly means everything.

[00:07:21]You never finish knowing a song you love. You just keep returning to it. You don't know a place that way either.

[00:07:27]People live their whole lives in the same city and still find a street they've never walked down. Still discover a corner that surprises them.

[00:07:35]Familiarity isn't the same as total knowledge. So you can know someone the way you know a piece of music you love.

[00:07:41]Just something that moves you, that you recognize, that feels like it means something even when you can't explain why. You can know someone the way you know a place you keep returning to. just familiar in a way that feels like home.

[00:07:54]A place where your guard comes down without you deciding to let it. And here's what nobody tells you about that kind of knowing. It requires you to stay curious. The moment you decide you've figured someone out completely, you stop looking. You replace the actual person in front of you with the story you've been writing about them. Attention sustained over years might be the closest thing to truly knowing another person that actually exists. Just I am still here, still looking, still finding you interesting, still choosing you, even knowing I'll never have the full picture. The mystery is the reason you keep showing