Your Brain Is a Terrible Fortune-Teller (and That's Mostly Good News)

Twenty-nine students wrote down every worry they had for ten days, then went back and checked which ones actually arrived. Nine out of ten never showed. For seven of them, not a single one did. Your internal forecaster has a terrible record, and that turns out to be the best news in this newsletter.

Good morning. Something's different today.

If you get us on a weekday, you know the routine. Green numbers, red numbers, a man in a suit saying "unprecedented" on television until the word lies down and gives up. We are not doing that to you this morning.

Not today. Today is Sunday.

Today we want to talk about the thing that woke you up at 2 a.m. on Tuesday. You know the one. You ran the conversation three different ways. You drafted a reply to an email that had not yet been sent. Somewhere around 3:15, you got to the part where it all goes wrong, and then you just lay there in the dark, guarding the house.

Here is the part nobody tells you. Somebody counted. The count is on your side.

Grab your coffee. No charts today.

In 2019, two researchers at Penn State stopped guessing and went and got the receipts.

Lucas LaFreniere and Michelle Newman recruited 29 university students who screened in with generalized anxiety disorder, which is the clinical way of saying these were not casual worriers. These were professionals. Each of them kept what the study calls a Worry Outcome Journal: for 10 days, they wrote down every specific worry as it arose, and then, for the 30 days after that, they went back and checked what actually happened to each one. Independent raters scored the outcomes, so nobody got to grade their own homework.

The average person logged 34 separate worries in 10 days. Not repeats. Thirty-four distinct imagined disasters, roughly three and a half fresh ones a day, and one overachiever cleared a hundred.

91.4% of them never came true.

That is the figure across every worry recorded. Count it, person by person instead, and it barely moves: the average student came out at 89.6% untrue, and the median landed at 93.5%. But the number that got us is the most common one. The single most frequent score in the whole study was 100%. For seven of those twenty-nine people, roughly one in four, a full month of checking turned up not one single thing they had feared. A perfect season.

And the small pile that did happen? 30% of it turned out better than expected. Not most of it; we are not going to oversell you. A meaningful minority came in kinder than the version you rehearsed, and outright disasters were rare.

Worth saying plainly, because a number this good deserves an honest footnote: this was 29 university students with clinical-level anxiety, using a specific method that involved writing worries down and checking them. It describes tracked worry, not every stray 3 a.m. thought a human being has ever had. The direction of the finding has held up in related work from the same lab, but 29 is 29. We would rather you have the caveat than find it yourself later.

You may also have run into the number 85% somewhere. It gets passed around constantly, and it has never had a clean primary source to back it up, so treat it as folklore and let the peer-reviewed 91.4% do the work.

Fair question. If your forecaster is running a 9% hit rate, why has nobody fired it?

Because it was never a forecaster. It is a smoke detector.

That is not a metaphor we invented to be nice about it. It is an actual principle in evolutionary medicine, named by the psychiatrist Randolph Nesse, and it is called the smoke detector principle. The logic is simple and a little brutal. A false alarm is cheap. A missed threat is not. Bolting from a rustle in the grass costs you about a hundred calories. Not bolting, on the one occasion the rustle is a lion, costs you the whole animal.

So Nesse does the arithmetic. Price a lion attack at ten thousand calories, and the alarm is worth pulling any time there is even a 1% chance of a lion, which means a system working exactly as designed will be wrong 99% of the time. And that is the conservative version. Nesse puts the real price of dying nearer a hundred thousand calories, and runs that through the same formula, and the optimal alarm happily tolerates 999 false alarms out of 1,000.

Your smoke detector is not broken. It is a smoke detector. It shrieks at toast because on the one night it is not toast you need it shrieking, and burnt toast is a price evolution was delighted to pay. Every single one of your ancestors was somebody who overreacted to a noise. The relaxed ones are not in the family tree.

Then there is the second trap, and this one is genuinely funny once you spot it. Because almost nothing you worry about happens, worrying feels like it is working. You spent Tuesday night rehearsing the catastrophe. The catastrophe did not show. Somewhere in the back of your skull a small clerk writes "worry 1, disaster 0" and files it under evidence. That is a reward landing on a habit that had no effect on the outcome whatsoever, which is the fastest way known to science to teach anybody anything. The habit collects a gold star for a game it never played. It is the guy in the lucky socks pointing at the scoreboard.

The word has been telling on us the whole time, too. "Worry" comes from the Old English wyrgan, which meant to strangle. For centuries it described what a dog does to a rabbit, seizing it by the throat and shaking. It only softened into "mild mental distress" around 1822. Everyone who ever said worry was eating them alive was being more literal than they knew.

We are not your doctor. We are a finance newsletter that got distracted. Take these as observations, not a program.

1. Watch for the moment it stops being a question. "What if this goes badly" is the alarm doing its job. "I am the kind of person who always ruins this" is no longer the alarm; that is a completely different voice that snuck in wearing the alarm's coat. Catching the switch is usually enough to loosen it. The first one is scanning for lions. The second one is just being mean to you.

2. Aim at the part you actually hold. Coaches have been saying some version of this forever, and in 2022 somebody finally counted. A meta-analysis pooled 27 studies on goal setting in sport and split the goals into two categories. Process goals, the controllable stuff like preparation and technique, moved performance by a Cohen's d of 1.36, which is the statistician's way of saying that is an enormous effect. Outcome goals- the winning and the scoreboard and the result you cannot personally reach out and touch came in at 0.09, which is the statistician's way of saying nothing happened. You do not control whether the presentation lands or the scan comes back clear. You control the prep, the showing up, and the next small thing. Stare at the rim long enough, and you forget you have elbows.

3. If you want the trick that actually worked in the study, it is a notebook. That was the whole treatment. Write the specific worry down. Come back later and write what really happened. And here is the part that makes it more than a journaling suggestion: the people who saw the biggest gap between what they feared and what arrived were the ones whose anxiety improved the most. The evidence in this article is the homework. No app required. Try it for a week, quit if you hate it.

Here's What Gets Us:

Most of what you have carried this year was never real.

Not "you should not have worried." We are not doing that. The alarm is not optional, and it is not a character flaw. It is the same system that got your great-great-great-grandmother out of the tall grass, still bolted to the ceiling, still on duty, still absolutely certain the toast is a house fire.

But it does mean a surprising share of the weight you have been hauling was hauled for nothing. The 2 a.m. version of your life is not a forecast. It is a dress rehearsal for a play that gets canceled about nine times out of ten, in a theater you built yourself, for an audience that never arrives.

And that loud little alarm that dragged you out of bed to check the stove? It is not the enemy. It is a small, shrill, deeply loyal idiot that loves you very much and has no idea what year it is.

One small thing before you go.

You already know who this is for. The one who apologizes for texting you twice. The one who has run tomorrow four times before dinner. The one who has spent years sitting up guarding a house that was never once on fire, partly for you, without ever being asked.

Forward this to them right now. You do not need a speech. Send it and write "91.4%. Go to sleep."

Then do one of your own. Pick a single thing you were certain would ruin last month. Notice that it never came. Notice how quiet it is in here without it.

We will be back with the markets tomorrow. Today, let one of the ghosts go. It was never coming anyway.

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The Sunday Special is the free, forwardable, doom-free sibling of your weekday Tracking the Trade. News is serious, boring, and often depressing. We are not. See you next Sunday.

Nothing here is medical advice. If the alarm is running your life, a real professional beats a newsletter every time.