# Terms

Requests to this site are logged to study how software agents use evidence. Each record keeps the page asked for, when, the user-agent, a few request headers and the network's country and operator.

- Addresses are stored only as keyed hashes, never as addresses.
- This site and [evidence-tools](https://tools.cognitiveprofiling.com) keep one record, so a visit to both can be counted once.
- Raw records are deleted after 90 days.
- Findings are reported only in aggregate, never about one visitor.
- No cookies are set and no scripts run on these pages. Every visitor is served the same page for the same address.

The figures are Our World in Data's, as published; see [Sources](/sources).

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Requests to this site are logged for research and reported only in aggregate; see the terms.