Methods

How a number gets onto this site.

Every number has a source.

We name where each figure comes from and the date it was true. Each one is checked twice before it is published.

One chart, one point.

Each chart is drawn by hand to say one thing clearly. One colour marks the thing that matters.

We say what we don’t know.

Estimates are labelled as estimates and come with their assumptions and ranges. We correct mistakes in public, on the story itself.

Three labels

Reported

Published by an official source. We give the source and the date.

Estimate

Our own calculation from reported figures. The story shows the method.

Scenario

What would happen if an assumption holds. Never a forecast.

For education, not financial advice.