Knowledge in the body
Lesson 27 of 31 in the course “Brain Hacks”. Free, with animations and a quiz.
You can do more than you can explain
You can probably ride a bike. Now explain exactly how you keep your balance. You’ll likely say something like “you keep pedalling and it doesn’t fall.” Scientists wrestled with this for almost two hundred years: the first bike prototype appeared in 1817, and equations that truly explain riding were published only in 2007. The main secret turned out to be surprising: to avoid falling, you steer toward the side you start tipping to. You do it every time, but almost nobody knows that’s what they’re doing. As one engineer put it: “Everybody knows how to ride a bike, but nobody knows how we ride bikes.” That’s knowledge in the body. It’s real and precise, but it doesn’t live in words.
Builders without blueprints
This kind of knowledge passes on in a special way. In the 1990s an architect-turned-anthropologist went to Yemen and became an apprentice to minaret builders. He was amazed. Almost nobody explained anything there. Newcomers spent months carrying tools and bricks and listening to the masters talk, and when they got something wrong, they usually weren’t told why. Most striking: the huge, tall tower was built without any blueprints at all. So how did they learn? Apprentices watched the seniors’ movements very closely, copied them, and over time mastered them. From simple tasks to complex ones, sometimes over years. Knowledge passed from body to body without words. Many crafts, dances and sports are learned the same way. Your takeaway: for some skills, watching a master live gives more than ten articles on how to do it.
Why smart investors went to see it live
Observation works even in finance. Before the 2008 crisis, a small team of US investors suspected the mortgage-bond market was inflating like a bubble. They studied mountains of data and had already bet $300 million against the market. Then they went to a huge industry conference in Las Vegas. About 7,000 people were there, versus the usual 500 at such events. Salespeople were frantically pushing risky products. And staff from the rating agencies, who were supposed to judge these products strictly, wore cheap suits: clearly not the big players, though they should have been. All together it gave the investors a clear feeling: the market had lost its mind. After the trip they raised their bet to $550 million. Key point: the live impression didn’t replace the analysis, it added to it. Remember the last lesson? Numbers first, picture second, but the picture is worth seeing with your own eyes too.
Beginners break it down, masters see the whole
How does a skill move from head to body? Through practice. At first you do everything step by step and talk yourself through it: “weight on the left foot, hands forward.” That’s normal, even necessary. Scientists tested this on footballers dribbling a ball through cones. Beginners did better when they focused on their movements. When distracted by another task, they played worse. Experienced players were different: the extra task barely bothered them, because the skill already worked as one whole and they had attention to spare. It’s the same automation from the start of the course. Hundreds of repetitions glue separate steps into one smooth block, and autopilot takes over. So for a beginner, breaking things down helps; for a master, trusting what’s already learned matters more.
When thinking hurts
Now a surprising twist. Experienced golfers were asked to putt in two modes, 20 putts each. In the first, they had to closely watch their stroke and say “stop” the moment the club stopped. In the second, they listened for tones and said “tone” when they heard the right one. Result: with the outside sounds they putted noticeably more accurately than when watching themselves. For a master, analysing their own movement gets in the way. That’s where choking under pressure comes from: nerves make a person break the skill back into steps, and errors creep in between them. Something similar was found with memory: people asked to describe a robber’s face from a video in detail later recognised it worse in photos. A large replication study confirmed this effect, though it turned out smaller. Words don’t always help what lives in the body and the eyes.
Improvisation: spot the pattern and act
Knowledge in the body isn’t just for repeating; it’s for handling the new. Take chess. A strong player calculates only a few moves per second; a computer, millions. But the human looks where it matters. Back in the 1970s researchers estimated that a master holds 50,000 to 100,000 familiar position patterns in memory. They see the board not as 32 pieces but as familiar chunks, and know right away which moves are worth considering. One world champion said: “You cannot second-guess your intuition before every move.” When a position is new, a master doesn’t freeze: they recognise pieces of familiar patterns in it and improvise. The same way a driver swerves around an unexpected pothole, or a musician picks up someone else’s melody. It’s the same “trained intuition” from lesson 25: huge experience plus a regular environment.
Danya and the skateboard trick
Danya is learning an ollie, the jump with the board. At first he does it step by step and talks it through: “back foot snaps, front foot drags up.” He falls, but that’s how it should be: for a beginner, focusing on details helps. He watches an older guy at the skatepark and copies how he moves his shoulders. After a couple of weeks and hundreds of tries, the trick suddenly clicks into one motion, and Danya stops thinking about his feet. Then he’s invited to a mini contest. At the start he gets nervous and begins thinking about each foot again. Result: two falls in a row. Danya remembers the golfers. Before his third try he stops analysing the move and thinks of just one thing: “clear that crack over there.” Clean. Danya got the main point: learn in steps, perform as a whole.
Try it: a skill-growth plan
Pick a skill you want to level up: video editing, guitar, public speaking, trading on a demo account. Step one: find where you can watch a master at work, not just the finished result. Streams, breakdowns, working alongside someone. The body learns by copying movements. Step two: copy and break it into steps. While you’re a beginner, attention to detail is your friend. Step three: lots of reps with fast feedback. Record yourself, compare with a model, ask for a review. Without feedback, autopilot learns your mistakes too. Step four: once the skill has come together, don’t take it apart under pressure. Pick one simple outside target: “hit that spot,” “the first line.” And honestly: knowledge in the body isn’t magic or a replacement for the brain. It’s hundreds of repetitions that one day start working without your control.
Check yourself
- Why can almost nobody explain how they balance on a bike?
Correct answer: The skill lives in the body, not in words. Yes. You steer into the fall without knowing it. The knowledge is precise but not verbal. - An experienced golfer before a key putt. Based on the experiments, what helps more?
Correct answer: Don’t dissect the stroke, keep one simple target in mind. Yes. A master’s skill works as a whole; breaking it into steps adds errors. - A beginner is learning to dribble. What will most likely help?
Correct answer: Pay close attention to his movements. Yes. For beginners, attention to detail helps: the skill hasn’t yet become one whole. - Danya wants to learn video editing fast. Which plan best reflects the lesson?
Correct answer: Watch a pro edit, copy, and get feedback. Yes. Watching the process, practice and feedback: that’s how a skill moves into the body.