What Lindy Told Me: Via Negativa

Imagine your room is a mess. Clothes on the floor, books everywhere, a half-eaten packet of biscuits under the bed. Your mother says, "Make this room nicer." What do you do?

Most of us hear "make it nicer" and think we should add something - a new poster, fairy lights, a fancy lamp. But stop and think. If you hang up fairy lights over a floor covered in dirty clothes, the room is still a mess, only now it is a mess with lights. The thing that actually makes the room nicer is not adding anything at all. It is taking away the mess. Pick up the clothes. Throw out the biscuit packet. Put the books on the shelf. You added nothing, and yet the room is transformed.

This is a surprisingly deep idea, and it has a name that sounds grand but means something simple: improving by removing. The old thinkers called it via negativa - the negative way - and it just means that very often the surest way to make something better is to take the bad part out, not to pile a good part on top.

Here is why this matters so much more than it first seems. When you add something, you can never be fully sure it will help. A new lamp might clash with the room. A new medicine might have a side effect nobody expected. A new gadget might break. Adding is a guess about the future, and the future is foggy. But when you remove something you already know is harmful - the dirty clothes, the biscuit packet, a lie, a danger - you are much more certain you have made things better, because you are removing a harm you can already see. You improve most reliably by taking away what is clearly harmful and fragile, not by adding one more clever thing on top.

This chapter is the closing one for a reason. Everything careful investing teaches finally rests on this quiet, unglamorous skill: getting better by subtraction. And its most important cousin is the rule that survival comes first - because the biggest thing you can ever remove from your investing life is the chance of being wiped out.

Let's sit with a strange truth: knowing what not to do is often more useful, and more certain, than knowing what to do.

Think about riding a bicycle. Nobody can hand you a perfect list of "do exactly these seventeen things and you will ride beautifully." Balance is too subtle for that. But there are a few "don't"s that are rock solid: don't ride with your eyes shut, don't ride straight at a wall, don't let go with both hands on a busy road. These "don't"s are not fancy, but they are almost never wrong. You could ride for fifty years and the "don't ride into a wall" rule would hold up every single day. The positive advice ("lean just so") is shaky and depends on the moment. The negative advice ("don't do the deadly thing") is sturdy and holds everywhere.

Investing is exactly like this. Nobody - truly nobody - has a reliable list of "do these things and you will definitely get rich." The people on television who claim to have one are guessing, even when they sound certain. But the list of things that reliably ruin investors is short, boring, and astonishingly steady across the years: putting in money you can't afford to lose, borrowing so heavily that one bad year finishes you, chasing things you don't understand, and letting costs quietly eat your returns. Avoid those, and you have removed most of the ways the game ends badly - without needing to predict a single winner.

Notice the lovely asymmetry. Good advice about what to add goes stale. A hot company today is a cold one in five years; a clever trick that works this year stops working when everyone copies it. But the harms you remove stay harmful forever. "Don't bet money you need next month" was true for your grandfather and will be true for your grandchildren. Negative knowledge lasts. Positive knowledge decays. So if you want lessons you can lean your whole weight on, collect the "don't"s.

And there is a gentle, human comfort here too. To add the right thing, you have to be smart - you have to out-guess a foggy future. But to remove the wrong thing, you mostly just have to be honest and disciplined. You don't need to be a genius to refuse to borrow money you can't repay. Subtraction is a skill available to everyone, not just the clever. That is why it is the fairest and most dependable path to getting better at anything, money included.

There's a reason for this that goes deeper than luck, and it's worth understanding. When you add a good thing, you help yourself only in the one particular way you imagined - and only if the future behaves the way you guessed. But when you remove a harm, you protect yourself against a whole crowd of futures at once, including the ones you never thought of. Take Arjun's giant loan, which we'll meet in a moment. Removing it protects him whether the bad year comes from a flopped festival, a new competitor, an illness, or something nobody could have predicted. He didn't have to foresee the specific disaster to be safe from it - he just had to remove the fragile thing that would have turned any disaster into ruin. That is the hidden magic of subtraction: a single removal quietly defends you against dangers you can't even name. Adding requires you to predict; removing does not. In a world you can't predict, that difference is everything.

Let's make this concrete with a picture, because the difference between adding and removing is easy to feel once you see it.

Picture your money as a wall you are building to keep your family safe over many years. There are two ways you might try to make the wall better.

The first road is the adding road. You keep piling on new bricks - a new hot tip here, a borrowed loan to buy more there, a fancy new product a salesman recommends. The wall gets taller, and tall feels impressive. But every brick you add is a guess. Some bricks are cracked. Some are placed at a wobbly angle. The taller and more crowded the wall gets, the more ways it has to fall over - and because you can't see the future, you never quite know which new brick is the one that brings it all down.

The second road is the removing road. Instead of stacking higher, you walk along the wall you already have and pull out the rotten bricks - the crushing loan, the company you never understood, the habit of buying and selling every week and paying a fee each time. The wall gets a little shorter. That can feel like you're going backwards. But every brick you remove is a sure thing: you know that rotten brick was a weakness, so pulling it out can only make the wall harder to knock down. You end with a wall that is lower but far, far more likely to still be standing after a storm.

Both roads are trying to reach the same place: a stronger position for your family. But they are not equally trustworthy. The adding road depends on your guesses being right. The removing road depends only on your honesty about what is rotten. And since honesty about known harms is far easier than guessing an unknown future, the removing road is the one you can lean on. This is the whole spirit of via negativa carried into money: when you're unsure how to get better, look first for something harmful to take away.

Let's put real rupees on the table and watch subtraction do its quiet work. illustrative

Meet Aarohi. She has ₹5,00,000 saved and invested in a simple basket of good companies. She is a bright, energetic person, and energy is exactly her problem - she cannot sit still. Every week she reads the news, gets excited or scared, and shuffles her money around: sell this, buy that, jump into the story everyone's talking about, jump out when the mood turns. It feels like hard work, and hard work feels like it should be rewarded.

But every time Aarohi buys or sells, three small things happen, and none of them are in her favour. She pays a fee to trade. She pays a little tax on any gain she books early. And she often sells a steady company right before it would have done well, buying an exciting one right before it disappoints - because she is chasing the mood, not the business. Each single shuffle looks tiny - maybe it costs her half a percent all told. But she does it dozens of times a year.

Let's add up the leak. Say all this busywork drains roughly 3% of her money every year in fees, taxes, and bad timing - 3% that simply vanishes, on top of whatever the market does. On ₹5,00,000, that is ₹15,000 in the first year. That doesn't sound fatal. But money is supposed to compound - to grow on top of its own growth - and every rupee that leaks out is a rupee that can never grow again. Over ten years, that steady 3% leak, compounding against her, quietly costs her not ₹1,50,000 but closer to ₹2,00,000 once you count all the growth those lost rupees would have earned. A third of her savings, gone - not to a crash, not to a scam, but to activity.

Now watch the via negativa fix. Aarohi doesn't need to get smarter. She doesn't need a better tip or a cleverer strategy. She needs to remove something: the shuffling. She decides to trade only rarely, for a real reason, and otherwise to leave her good companies alone. She adds nothing at all. She simply stops doing the harmful thing - and by stopping, she keeps that ₹2,00,000. Sometimes the most profitable move is not a purchase but a subtraction - removing a costly habit adds more to your wealth than any clever new bet. The leak she plugged was invisible while it was happening, which is exactly why removing it took discipline rather than genius.

Now let's watch a different, more dangerous thing you can remove - the kind whose absence isn't just profitable but life-saving. illustrative

Meet Arjun, who runs a small shop selling phone accessories. The shop earns him a comfortable ₹40,000 a month in a normal year. One day a friend says, "Why grow slowly? Take a big loan, open three more shops, and multiply your income." It sounds wonderful. Arjun borrows ₹20,00,000 to open the new shops, with a repayment of ₹45,000 every single month, come rain or shine.

In a good year, the plan looks brilliant. Four shops earning, more money than ever, the loan easily paid. Arjun feels like a genius. But look closely at what he has quietly done: he has made his survival depend on nothing going wrong. The ₹45,000 monthly repayment does not care about his troubles. It is due whether business is booming or a festival season flops or a nearby mall pulls his customers away or he falls ill for two months.

Then a bad year comes, as bad years always eventually do. Sales drop by a third. Now his shops earn less than the loan demands. He can't pay. The lender takes the shops, and worse, comes after his original shop and his savings too. In one bad season, a man who was comfortable for years is wiped out - not because his business was bad, but because he added a burden that could not survive an ordinary storm. The extra shops didn't ruin him. The extra debt did, because debt turns a bad year into a fatal one.

Here is the via negativa reading, and it is the master rule of this whole book. Arjun's mistake wasn't failing to add enough growth. It was failing to remove the thing that could kill him. Had he grown slowly with his own money - adding one shop only when he could afford to - a bad year would have merely been a disappointment he waited out, his survival never in question. You only get to keep compounding if you are still standing; anything that can remove you from the game in a single bad year must be removed from your life first, no matter how much it might have added in a good one. Growth you can't survive isn't growth. It's a delayed way of losing everything.

Let's go one level deeper, because the reason survival must come first is not a feeling - it is arithmetic, and once you see it you can never unsee it.

Money grows by multiplying, year after year. A good year multiplies your money by a little more than one - a 10% year multiplies it by 1.1. A bad year multiplies it by a little less than one - a 20% fall multiplies it by 0.8. To find where you end up after many years, you multiply all these numbers together in a long chain. And here is the deadly fact about multiplying chains: if even one link in the chain is a zero, the entire chain becomes zero. It doesn't matter how many wonderful years came before or could have come after. One multiplication by zero, and everything is gone.

A ruinous loss - the shop seized, the savings wiped, the company that collapses to nothing - is that zero. And a zero is not like other bad years. A normal bad year (multiply by 0.8) is a setback you recover from; the chain keeps going. But a zero ends the chain. There is no next year to multiply, because there is nothing left to multiply. This is why survival isn't just one goal among many - it is the goal that protects all the others, because it keeps the chain unbroken.

Let's make it real with rupees, because the arithmetic is more shocking than it sounds. Picture two cousins who each start with ₹5,00,000. Haridya is careful: she never risks a wipe-out, and her money grows a steady, unspectacular 9% most years. Aman is bold: he swings for huge gains and often gets them, growing a dazzling 25% a year - but he keeps one hidden chance of ruin alive, some year where a debt or a wild bet could take him to nearly zero. For nine glorious years Aman is far ahead; his ₹5,00,000 has ballooned past ₹35,00,000 while Haridya has plodded to about ₹11,00,000, and everyone calls Aman the genius. Then, in year ten, his hidden zero finally arrives - the loan is called, the bet collapses - and his pile falls by 95%, back to under ₹2,00,000. Haridya, who never had a zero to fear, simply keeps compounding past him and never looks back. Aman's problem was never his returns. His returns were wonderful. His problem was that he left one zero in his chain, and given enough years, a live zero always eventually fires.

Feel what this means for how you should live as an investor. The person who earns a spectacular return but takes on a hidden chance of a zero is not brave - they are playing a game that, given enough years, ends in exactly one place. And the person who earns a modest return but has carefully removed every zero from their chain will, over a long life, quietly overtake them, because their chain never breaks. Removing the zeros - not adding the biggest numbers - is what wins the long game. That is via negativa and survival-first shaking hands: the single most valuable thing you can subtract from your investing is the possibility of ruin.

Let's watch subtraction work on a whole basket of investments, because a portfolio, like a garden, is often improved most by pulling weeds rather than planting more. illustrative

Meet Aayra. Over the years she has collected twelve investments, and if she's honest, she doesn't really understand four of them. One is a company in a foreign industry she can't explain. One is a "product" a bank salesman sold her that she's never been able to describe out loud. One is a friend's business she put money into out of loyalty. One is a fashionable thing she bought because it was rising. Together these four hold ₹3,00,000 of her ₹10,00,000.

Aayra feels she should be doing something to improve her portfolio - and her instinct, like most people's, is to add: research a hot new company, put in more money, find the next winner. But the via negativa question is different and quieter: what here is harmful, and can I remove it?

She looks at her four un-understood holdings and admits the truth: she cannot tell whether any of them hides a "zero." She can't judge their debt, their honesty, or their real business, because she doesn't understand them. Each one is a brick in her wall that might be rotten, and she has no way to inspect it. So she does the humble thing. She sells all four and moves the ₹3,00,000 into the eight companies she does understand - plain, boring, sturdy ones whose bricks she can actually check.

Notice what happened. Her portfolio got smaller - twelve holdings down to eight. On the surface she "did less." But it got dramatically stronger, because she removed every position where a hidden ruin could have been lurking unseen. She didn't need to find a single new winner. She just needed to stop owning things she couldn't judge. A year later, when one of those un-understood companies turns out to have been drowning in secret debt and collapses, Aayra feels nothing - she doesn't own it anymore. She removed the spider before she ever saw its legs. Getting stronger by owning less is the most underrated move in investing, and it is pure subtraction.

The slip here is not laziness - it's the opposite. It's the deep, itchy urge to do something.

When our money worries us, sitting still feels unbearable. Doing nothing feels like neglect, like we're failing to earn our returns. So we add: a new tip, a new fund, a bit of borrowing to "make our money work harder," a flurry of buying and selling so at least we're busy. Action soothes the itch. But investing is one of the rare places where the busiest hand is very often the poorest, because most of the harm comes from things we added - costs, debt, complexity, holdings we can't judge - and almost none of it gets fixed by adding more.

The trap tightens because subtraction feels like giving up. Selling the un-understood holding, refusing the loan, sitting on your hands while others chase the hot story - all of it feels passive, even cowardly, while it's happening. Nobody praises you for the debt you didn't take or the scam you didn't buy. The good that subtraction does is invisible: it shows up as a disaster that never happens to you. And it's terribly hard to feel proud of a bullet you dodged in the dark without ever seeing it.

Now the honest part, because via negativa is powerful precisely because it's simple - and simple ideas get dangerous when pushed too far.

The first way it misleads: "remove the harmful" is not the same as "remove everything and do nothing." A person who subtracts and subtracts until they hold no investments at all, just cash under the mattress, has not made themselves safe. They've chosen a slower harm, because year after year, rising prices quietly shrink what that cash can buy. The goal was never to strip your money down to nothing. It was to remove the ruinous parts - the zeros, the un-survivable debts, the leaks - while keeping the sturdy, growing core. Subtraction serves survival; it is not an excuse to stop investing.

The second way it misleads: subtraction can't be your only tool, only your first one. Once you've removed the harms - no ruinous debt, no un-understood holdings, no costly churn - you still have to have added something worth owning in the first place. A wall with every rotten brick removed but no good bricks at all isn't a strong wall; it's an empty space. Removing weeds makes a garden healthier, but you still had to plant flowers for there to be a garden. So do the addition too - carefully, boringly, into things you understand - but do the subtraction first and hardest, because a good addition on top of an un-removed ruin is still ruined.

And a third, quieter caution: subtraction only helps if you remove the right things. It's possible to be very busy taking things away and still walk straight into danger - if you cut your safe, boring holdings out of impatience while lovingly keeping the exciting, debt-soaked gamble. The skill is not "remove whatever's dull." It's "remove whatever could ruin you." Aim the subtraction at real dangers - the debt you can't survive, the business you can't understand, the cost that leaks, the bet that risks a zero - and leave the sturdy, humble things alone. Fearful in a useful way, jumpy about ruin and calm about everything else: that is the whole art, and it's how this closing idea ties the rest together.