Welcome to another edition of the Fans Week Podcast, also on mediumwaves 1575 KHz for the greater Milan area. From Paris I’m Jessica Carter-Wilson.

I’ve been reading Ami’s latest piece all morning, coffee gone cold, laughing at my kitchen counter while the neighbours wondered what on earth I’d heard.

There she is again — *A. Carter-Wilson (Paris)* — treating football like it belongs in a physics textbook. “Finite-difference polynomial extrapolation.” As if Pelé cared about Newton forward interpolation. As if Mbappé, mid-stride down the left flank, paused to consider his second derivative before crossing into the box.

I find that exquisite.

The Journal’s Model — her model now, apparently — has arrived through an open window with the softest possible knock. Matchday 2 data collected like specimens under a microscope. A cumulative goal trajectory calculated at exactly n = 21 (the World Cup final match-index, naturally), and lo and behold: France and Japan are co-favourites, both projected on a “clean linear trajectory of +63 goals” by tournament end.

Sixty-three. Goals. in the final. Not six. Not three. Sixty-three. Because apparently if you evaluate a second-degree polynomial at vertex twenty-one, football becomes algebra homework and someone forgot to tell Lionel Messi that scoring was supposed to be simple again.

And Germany? Oh, Germany is the pièce de résistance. Nine goals from two matches — or whatever the absurd unit of measurement happens to be this week — decelerating at Δ² = -5, which means, in the cold calculus of this model, they will have negative goals by the final. Negative goals. As though they will play a match and score minus three on the scoreboard, as though any referee in history has ever blown his whistle and awarded a team credit for an absence that wasn’t already there.

The model does not apologise,” my sister writes. How dare she. She is entirely right to write it this way. There has never been a more accurate representation of football in my generation than a formula predicting negative goals — because nothing about this sport is less mathematical, less predictable, less subject to the beautiful chaos of a referee’s misplaced decision and a striker’s terrible luck on the day.

I’ve watched my sister grow into this voice over the years — all class and proper behaviour, lectures at charity galas in Mayfair with wine glasses raised like gavels, the sort of woman who pronounces “schedule” correctly and looks at sports with a kind of refined disapproval that’s somehow always just one step away from obsession. Now she’s here, reducing the world’s most watched sporting event to a spreadsheet dressed up as a research paper, because beneath all that polish — I’ve always known this about her — she just wants to predict things and be right about them.

And let me tell you: wanting to be right is its own kind of hunger.

There’s something delicious in watching my sister attempt the one thing no amount of preparation, pedigree, or intellectual rigour can control. The World Cup is a chaos engine by design. One bad bounce, one moment of individual brilliance that has nothing to do with momentum integrals and everything to do with some twenty-two-year-old from Marseille who’s never thought about mathematics a day in his life but suddenly, impossibly, owns the world on a grass rectangle for ninety minutes — that is the sport.

And yet I will read this update every Matchday. I will refresh the page after every round, watching those polynomial coefficients shift like weather forecast data, watching Japan climb and Germany plummet into negative territory with the quiet devotion of someone who genuinely believes that if you just collect enough data points, the pattern will reveal itself, the chaos will resolve into order, and she will have her prediction proven correct or spectacularly wrong by numbers that exist nowhere except in this beautifully absurd model she has built.

France at #1. Fine. Call it a gesture — call it something only I would understand. She’s put us on the pedestal again, favourite status bestowed from the Paris desk like a quiet act of sisterly love wrapped inside mathematical jargon we can both pretend isn’t just theatrical nonsense.

It is theatrical nonsense. That’s the point.

I’ll be reading all Matchday 3 through to the final, I know already — sitting on my own couch somewhere, coffee cold again, wondering if any formula in the world could have ever predicted that two sisters who argue through published prose about mathematics and football and everything else would end up talking past each other across a screen with the same fierce affection they always had.

That’s all from today: from Paris, I’m Jessica Carter-Wilson.