Privacy

Reading lessons and using the playground does not require an account. Interactive evidence values stay in your browser.

Browsing and experiments

The experiments run in your browser. Slider settings, simulated evidence, and search text are not submitted to the site owner. This release has no reader accounts or comments.

Fonts, illustrations, and equation rendering are served with the website. The site does not include advertising or visitor analytics scripts.

Equation display and accessibility preferences are saved locally in your browser.

Hosting

Cloudflare serves the site and may process connection information, such as your IP address and requested page, to deliver and protect it. Sampled server logs help diagnose errors.

Links to papers and other websites take you to services with their own privacy practices.