The receipts
Every number I used, who measured it, how big the sample was, and where to read it yourself.
Including the four widely-quoted stats I threw out, and the mistake I made in my own research. Last updated 18 August 2026.
Every number I used, who measured it, how big the sample was, and where to read it yourself.
Including the four widely-quoted stats I threw out, and the mistake I made in my own research. Last updated 18 August 2026.