Privacy & data use.

1. Information collected

The site may process aggregate usage information such as page views, device type, browser type, and approximate region.

2. Former contact form

The contact form has been removed. Any messages previously sent through it were handled by Formspree for message delivery and spam prevention.

3. Analytics and consent

Google Analytics is not loaded unless you explicitly allow limited site analytics. If allowed, it helps count page views and measure which educational pages and site features are useful. This includes searches and filters, reading milestones, report and source links, and outbound referral clicks. Free-text searches are not sent; search events contain only query length and result count. Advertising storage, advertising personalization, and Google Signals are disabled by this site.

Event names and parameters are filtered to exclude common personal-information fields. URLs sent by this site are normalized without query strings or fragments. Your analytics choice is kept in local storage under analytics_consent so it can be respected on later visits.

4. Local preferences and page experiments

If a page experiment is active, a random variant assignment may be stored locally under a key beginning with at_experiment:. Exposure and click events are sent only when analytics consent has been granted. You can clear local storage in your browser to remove locally saved preferences and experiment assignments.

5. Service providers

Information may be processed by services required to operate the site, including:

• Formspree for messages sent through the former contact form.
• Google Analytics for aggregate traffic measurement.
• Hosting and infrastructure services that serve files and logs.

6. Retention and security

Information is kept only as long as reasonably necessary for the purposes described above, subject to the settings and obligations of the relevant service provider. Reasonable safeguards are used, but no internet transmission or storage system can be guaranteed to be completely secure.

7. Your choices

Depending on your jurisdiction, you may be able to request access, correction, or deletion of information you submitted, or object to certain processing. Analytics preferences can be managed using the controls above. Locally saved preferences can be cleared in your browser settings.

8. Policy updates

This policy may change when the site, service providers, or applicable requirements change. The current version was updated on November 9, 2026.