Why Being a Superfan Makes You a Worse Forecaster

There is a specific, repeatable pattern on every prediction platform: the people with the deepest knowledge of a subject are not the most accurate forecasters about it. They are the most confident ones. Those are different things, and the gap between them is where Stars go to die.

This is not an argument for knowing less. Expertise genuinely helps — it is what lets you spot a mispriced market at all. The problem is that expertise arrives bundled with attachment, and attachment quietly rewrites your probabilities. Here are the six ways it happens.

1. You are pricing what you want

The most basic one, and the hardest to see from the inside. When you care about an outcome, your estimate of its likelihood rises. You are not lying; the wanting genuinely changes what feels probable.

This is why markets about beloved teams, franchises and stars are systematically distorted. A large motivated fanbase does not just discuss an outcome — it buys it, and the price ends up reflecting collective preference alongside collective judgement.

The counter: predict against your affiliation deliberately, at least sometimes. Before committing to a market involving something you love, ask what price you would accept on the opposite side. If you would not take the other side at any price, you are not forecasting.

Better still: the fan bias in a market is an opportunity if you are not the fan. Some of the cleanest edges available are on the unglamorous side of a market about something with a passionate following.

2. You remember the highlights, not the average

Ask a fan how a player performs in pressure situations and you will get a vivid answer built from three or four unforgettable moments. What you will not get is the denominator.

Memory stores drama, not frequency. The match-winning innings is encoded permanently; the twelve quiet failures in similar situations are not encoded at all. So "he always turns up in big games" is a real memory and a bad statistic.

The counter: before you use a pattern, ask "out of how many?" If you cannot answer, you have an anecdote. Look up the base rate. It is almost always less dramatic than the memory.

3. You update too much on the last thing you saw

One extraordinary performance moves your estimate far more than it should, especially if you watched it. One bad day does the same in reverse.

This is why prices spike after a standout performance and drift back over the following days. The spike is recency; the drift is reality reasserting itself.

The counter: ask how much a single event should change a season-long estimate. Usually the honest answer is "a little". If your view moved a lot on one match, you were probably not holding your prior very firmly to begin with — which means your original number was a guess, not an estimate.

4. You find the evidence you went looking for

Once you have a view, research stops being a search and becomes a collection. You notice the supporting statistic and skim past the contradicting one. You find the tweet that agrees with you and treat the one that doesn't as noise.

The counter: invert the search. Before committing, spend five minutes actively arguing the other side — not a token gesture, an honest attempt to build the strongest possible case against your own call. If you cannot construct a coherent case for the opposite outcome, you do not understand the market well enough to price it, because a lot of other people are taking that side and they have reasons.

5. You knew it all along (you didn't)

After a result, the outcome feels like it was obviously coming. This is hindsight bias, and it is the reason so few people improve with experience: if every past outcome looks inevitable in retrospect, you never notice that you were surprised, and if you never notice you were surprised, you never recalibrate.

The counter: write your number down before the event. Not "I think yes" — an actual percentage, and one sentence on why. This single habit is the difference between ten years of experience and one year repeated ten times. When it resolves, you have a record that hindsight cannot quietly edit.

6. You mistake a good story for a likely one

Narratives are compelling in proportion to their specificity, and probabilities work in exactly the opposite direction. "The veteran returns and wins the final in his last season" is a wonderful story built from three separate conditions, each of which must hold. Every added detail makes a story better and its probability lower.

This is the conjunction fallacy, and sport and cinema are engineered to produce it — they are narrative industries, and their entire promotional apparatus exists to make particular outcomes feel destined.

The counter: count the conditions. If an outcome requires three things to go right, estimate each separately and multiply. The result is usually much smaller than the story feels, and that gap is frequently what a market is mispricing.

What good actually looks like

Notice that none of the counters above involve knowing more about cricket or cinema. They are all procedural — they change how you handle what you already know.

The forecasters who climb the leaderboard tend to share four habits:

They write numbers down first, before looking at the price.

They pass constantly. Most markets, most days, are approximately correctly priced, and the discipline of committing nothing is what preserves Stars for the few that aren't.

They separate confidence from stake. A weak edge gets a small position. Excitement is not confidence.

They review resolved calls, including the wins. A correct call for the wrong reason is a warning, not a triumph — the reasoning is the thing that repeats, and if it was faulty this time it will be faulty next time, when the luck runs the other way.

The reframe that helps most

Stop asking "what do I think will happen?" and start asking "what is the probability, and where does the market's number disagree with mine?"

The first question invites you to be a fan. It rewards conviction, story and loyalty.

The second one invites you to be a forecaster. It rewards calibration, and calibration is the only thing that compounds. You can keep loving the team. Just don't let the loving do the pricing.