Intuition as a Tool in Life and Markets
I once kept a pros-and-cons list for the woman I'd marry. On the half of every decision the numbers can't hold.
I trained as a quant. I had majored in computer science at Northwestern, and as an introverted immigrant I found in the spreadsheet something close to a refuge in Lehman Brothers in 1999 — a place where the world held still long enough to be understood. It felt safer, cleaner, faster than the alternative. Numbers did not have moods. A model did not care where you were born or how you sounded. You fed it the inputs and it gave you back an answer you could defend.
I took it further than was reasonable. When in 2006 I met the woman who would become my wife, I made a list — pros in one column, cons in the other. I am not proud of this. I tell you because it is the whole essay in a single image: a man trying to underwrite a marriage the way he would underwrite a position (yes I have shown her the spreadsheet!).
It is faintly ridiculous. It is also how I approached almost everything for the next two decades, and — this is the part that matters — it made me good at my job.
It also, in time, cost me a great deal of money. Not because the spreadsheet was wrong, but because I had mistaken half a decision for the whole of one.
The losses I remember most clearly were not the ones where I lacked information. They were the ones where I had all of it — a beautiful model, every cell populated, the logic airtight — and the world simply declined to behave the way the cells insisted it would. A spreadsheet assumes that the thing it measures will hold still while you measure it.
Markets do not hold still. They are reflexive: the price moves the fundamentals that are meant to move the price, and the model, which has no way of seeing itself being acted upon, walks you with great confidence off a cliff. The same is true of a life. No column of pros and cons survives contact with the person you actually marry.
This is what took me twenty years to understand. The spreadsheet is not wrong. It is half a mind. The other half — the one I had spent those twenty years refusing to develop — is the felt sense: the read of the room the model cannot see, the knowing of what to do with an answer once you have it, and the knowing, sometimes, of when to do nothing at all.
Decision = Prediction + Judgement
There is a formula I keep returning to, from a recent book on artificial intelligence:
Decision = Prediction + Judgement.
The prediction is what is likely to happen. The judgement is what to do about it. For my entire career the edge lived in that first half — better models, more data, a faster read. And that half is being commoditised in front of us. The machines already predict better than I can, and the gap will only widen.
As prediction becomes almost free, judgement becomes the scarce thing: the read of the room, the weighing of what a forecast is actually worth, the choice to act or to wait.
Of course we can go wrong by leaning too hard on either half — a person who trusts only his gut is as lost as a person who trusts only his model. But that is not the error most of us make. Most of us, and I was the worst of them, lean too far toward the numbers. The neglected half is the felt one. It is also, now, the valuable one.
I think AI will make a lot of this worse. We will have more data, more information, more insights. The model will always, structurally, argue for action: there is forever a cell that has moved and a trade that answers it.
Restraint is the one position it cannot see. Which is why the felt half of the mind earns its keep exactly where the spreadsheet is loudest and why the trained gut’s first gift is not the brilliant move but the refused one.
Why Intuition Is Not A Feeling
There is an obvious objection, which is that intuition is just a feeling, or emotion.
It is not a feeling.
The cleanest definition I know comes from Robert Greene:
“Intuition is not a vague feeling, it is high-speed pattern recognition and it arrives only after the rules have been practised so long that they have gone invisible.”
That last clause is the part everyone skips. The trained gut is not a gift you are born with. It is compressed experience, ten thousand hours folded into something that fires faster than you can reason. It feels like a hunch only because it has stopped showing its working.
Which is exactly why you cannot simply write it down. The knowledge has sunk below the level of words, we know, as Michael Polanyi put it, more than we can tell — and the moment you drag it back into language you can lose it. Psychologists have measured this. Show someone a face, then ask them to describe it carefully, and they become worse at picking it out of a line-up afterwards. The act of putting the perception into words overwrites the perception. The pianist who starts thinking about his fingers fumbles the passage he has played a thousand times. Naming does not record the felt sense. It evicts it. If you want to dive into this, we discussed it in Learning To See Again.
So the order matters more than the ingredients. The felt sense is not a rough draft of an argument, waiting to be tidied up by analysis; it is a different instrument — faster, wider, reading the whole room rather than the few cells that happen to have moved. The best calls, as one strategist I admire says of his own field, do not come from a dataset; they come from having read the room.
The mistake is to run the two instruments in the wrong order: to reason your way to the question, in which case you only ever retrieve what you could already name; or to let the hunch deliver the verdict, in which case conviction curdles into stubbornness. Let the perception set the question. Then let the analysis go to work on it. This is also why doing nothing is so often where the dots finally connect — not mysticism, but the plain fact that you have left room for the pattern to assemble before you crush it into a decision. Much of what looks like patience is really perception, still finishing.
The valuable people in any field will be those with good judgement or taste, that know the right direction to point the AI machine in.
The least valuable will be those that the AI machine can manipulate.
Isn’t this already true?
If you really want to go deeper into perception and consciousness, Joe Rogan recently interview Dean Radin. It will blow your mind.
The Question Mark
What does this look like on a Tuesday, when you actually have to decide something? Mostly it looks like re-pricing without trading.
In markets we mark to market: we re-value a position against what it is worth now, not what we paid for it. The discipline almost nobody keeps is to do this with everything — the job, the routine, the relationship, the belief held since you were twenty-five. Most people carry the furniture of their lives at historical cost. They value a thing at what it once cost them, or at what they have already sunk into it, and never re-price it against the alternatives in front of them today. So ask the unfashionable question of anything you hold: not why you bought it, but whether it is still the reason you would buy it now. Every morning you do not sell, you are buying.
Or to use the old Bertrand Russell quote:
“In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted."
The part the analytical mind gets wrong, and the part I got wrong for years is that marking to market is not the same as trading on the mark. You re-price constantly and without mercy; you act rarely. The amateur believes a fresh price obligates a move. It does not. Get comfortable holding cash — and, harder still, get comfortable holding a position through the noise. The felt sense is what tells you which is which: whether the new information is signal, or merely motion. The spreadsheet only ever sees that something has changed, and reaches for the trade. The trained gut reads the whole, and more often than you would like, it says: not yet.
How Will You Measure Your Life
The second discipline is to stop confusing what is loud with what matters.
A spreadsheet attends to whatever generates a number, and it generates numbers most often for the things that move daily — the price, the inbox, the urgent. The things that actually compound — your health, the depth of a friendship, a craft slowly mastered, a position left alone to grow — report rarely, or late, or never. So they drop out of the model, and then out of the life. By the time the slow things finally render a number, the input you might have changed is years behind you. Clayton Christensen made this point about careers and families: we over-invest in the parts of life that pay quick, visible returns and starve the ones that pay the largest returns of all, precisely because those arrive too late to feel like feedback.
The market version and the life version are the same move. The churned portfolio, traded for the feeling of activity, is the calendar packed full to feel productive. The long position left to compound is the old friend you finally called. For years I was, as I once put it to myself, trying to win every day — when the truth is that you do not need to win every day. You need to win eventually. It is a ten-year game, and the loud things are not the ones that win it.
Most people figure this out way too late.
The Dangerous Moment
I have made intuition sound trustworthy, so let me be honest about when it lies.
The danger is not that the felt sense is fake. The danger is that fear feels exactly like intuition. So does bias. So does mere familiarity, and so does whatever you were already hoping to hear. They all arrive in the body wearing the same clothes, and the hardest skill in this entire essay is telling the trained signal from its counterfeits. A gut is reliable only where it has been schooled — where the world is regular enough to hold its patterns, and gives you feedback fast enough to learn them. Outside of that, it is overconfidence with a heartbeat. Instinct, as I have written before, is pattern-matching, and pattern-matching fails in new situations. The most dangerous moment in a long career is the one where the regime has quietly changed and your beautifully trained instinct keeps matching to a world that no longer exists. I have watched brilliant investors hold a single view for a decade and call it conviction, when it was only a reflex that had outlived its world.
This is what I mean by the meta-knowing — the judgement that sits above both halves and decides which one to trust today. It is neither the spreadsheet nor the gut; it is knowing which instrument the moment calls for. Lean on the model where the world is stable and the variables are clean. Lean on the felt sense where the world is reflexive, human, fast, and unrepeatable. And of anything you are certain of — a trade, a grudge, a decision about a person — learn to ask the one question that separates the earned from the merely owned: do I know this, or am I only attached to it?
Learning To Trust Yourself
I told you at the start about the list I made when I met my wife. I should tell you how it ends. I did not marry her because of the list. I married her because I knew — in a way the columns could never hold and the spreadsheet could never compute — and the list was only theatre, performed by a young man who did not yet trust his own knowing.
It has taken me most of my life to see that the knowing which said marry her is the same faculty that now, in a market, says wait. One instrument, reading two different rooms. In a life it more often says go: toward the new thing, the frightening thing, the person. That pull, I have come to believe, is not a distraction and not a lack of discipline — it is your nervous system telling you where the next version of yourself is waiting, and the work is simply to follow it. In a market the same faculty, just as often, says do nothing at all. Both are the felt half of the mind, completing what the numbers can only begin.
The machines will take the first half. They will predict better than any of us, and soon. What they cannot do — what no model has ever done — is feel the room, weigh the answer, and know which half of the mind to trust. That has always been the rarest skill. It is about to become the only one still ours.
If the rest fades, keep these:
The spreadsheet is not wrong; it is half a mind. A decision is a prediction plus a judgement, and the model only ever does the prediction.
You can err toward either half. But the common mistake — and mine, for twenty years — is leaning too far toward the numbers. The neglected half is the felt one, and it is now the valuable one.
Intuition is not a feeling; it is compressed experience, firing faster than you can reason. It feels like a hunch only because it has stopped showing its working — and if you force it into words too soon, it vanishes.
The spreadsheet always argues for action. The felt sense knows when to do nothing. Restraint is the one position no model can see, because its payoff is a loss that never prints.
Re-price everything, constantly and without mercy — then act on almost none of it. Marking to market is not the same as trading on the mark, in a portfolio or in a marriage.
Do not confuse what is loud with what matters. The things that compound report late, or never. Protect them anyway. It is a ten-year game or maybe even an infinite one.
The hardest skill sits above both halves: knowing which to trust today, and telling real knowing from fear in its clothes. The machines will take the prediction. Knowing when to believe them and when to feel the room instead, is the last thing that is ours.
This week, take one thing you've held for years, a position, a habit, a certainty and hang a question mark on it. Then notice whether the honest answer is to act, or simply to keep holding.
