Prediction Market Correction
Card 788 is counted

One question a day, and how often it has really happened.

In 1906, 787 people at a cattle show wrote a name, an address and a guess at one ox's weight on a numbered card. Six crowds now put a percent on the Fed, the Senate, the strait and the storm season. We read all six each morning, and we count.

No. 785
No. 786
No. 787
West of England Fat Stock and Poultry Exhibition, 1906cardNo. 788
pounds
Card 788 is counted.

You're on the list. Your first question comes with the next morning's letter. The weight of the ox is a little further down.

787 people guessed. The average of their cards landed on the ox's weight to the pound.

Francis Galton borrowed every card and counted them. One guess at a time, the crowd was all over the scale. Put together, it was right.

Half the cards, 1,162 to 1,236 lb
Middle card, 1,208 lb394th of 787
The ox, 1,197 lband the average of all 787

Dressed weight in pounds. Figures from Galton's worksheets, as re-examined by Kenneth Wallis in Statistical Science, 2014.

Correction

Galton's 1907 article in Nature put the middle card at 1,207 lb and the ox at 1,198 lb, 9 lb apart. His own worksheets say 1,208 and 1,197. The crowd was 11 lb off.

One crowd, one question, and a scale to check it against. Today six crowds put a percent on tomorrow, and they rarely agree.

The Hormuz question settled on September 1, at ten ships a day.

A question lives in the letter from the morning the crowds split until the day it settles.

May 20261 of 4
Kalshi, the exchange regulated by the CFTC, put normal traffic through the Strait of Hormuz before September 1 at 54%. The forecasting sites, scored on accuracy with no money down, held out for 2027.
The record2 of 4
The record is what has actually happened before, counted. The Suez Canal shut for five months in 1956. After 1967 it stayed shut for eight years.
The date to watch3 of 4
The date was September 1, and the thing to count was ships. Before the war, more than a hundred crossed each day.
September 1, 20264 of 4
Ten ships a day crossed. Kalshi's 54% settled at no, and the slower crowd had the record on its side.
Settled: no

Some mornings go back to a question that just settled and grade every crowd that carried it.

Two exchanges had the September Fed at a coin flip. The bond desks leaned to a hike.

CrowdWho is in itChance
1Polymarketexchange, real money49%
2Kalshiexchange regulated by the CFTC51%
3Fed funds futures (CME)banks and bond desks58%

Chance of a rate hike at the Fed's September 16, 2026 meeting

The futures market at the CME is where banks and bond desks hedge the Fed's next decision. When a benchmark like it carries the question, it sits on the last row of our board. That decision moves the yield on your money market fund.

On July 29, with the odds of a hike at one in three, the Fed held. Three members voted to raise.

In 2018 the president's party lost 40 House seats and gained two in the Senate.

From 1934 to 2018 there were 22 midterm elections. You'll get one count like it each morning, tied to that day's question and the record it comes from.

22 midterms, 1934 to 2018
28House seats the president's party lost on average, and four in the Senate

Three minutes a morning, and you'll have the count before anyone at the table.

We'll print that the record sides with Kalshi, because that's a finding. A forecast in our own voice never makes the page, hedged or not.

We take no fees, run no fund, and never tell you to put money anywhere.

No. 788

Card 788 is counted. Your first question comes with the next morning's letter.

Hand in card 788

Your address goes on the card, and the six come to you each morning.

West of England Fat Stock and Poultry Exhibition, 1906cardNo. 788
Card 788 is counted.

You're on the list. Your first question comes with the next morning's letter.