Playground

Try to get a claim past it.

This is the real engine — the same Python package you'd pip install — running in your browser, on the Broad Street investigation of 1854. Write a claim about Snow's results and see what the record makes of it.

Python via Pyodide, about 10 MB the first time, cached after. Nothing is sent anywhere.

Write a claim

Statement

Scope — where it holds

Kind

Supported by

Measurements (JSON) — bind each number to a result field

What the record says

Load the engine, then test a claim.

Results you can cite

—

Or write Python

g is the graph and inv the investigation. Everything in the engineering guide works here.

Output appears here.