Sources

The Encyclopedia realm is English Wikipedia: card titles, descriptions, extracts, the full article body behind “read more”, and the freely licensed images on those pages.

The text is used under CC BY-SA 4.0. That carries two separate obligations:

• Attribution. Every card links to its article, and the article's history page credits everyone who wrote it. That is the form the Wikimedia Terms of Use accept.
• A licence notice. Naming the licence is not sufficient; the notice has to reach the licence text. So the licence is named and linked on the card itself, not only in a footer.

Non-free images are excluded by construction. Wikipedia hosts some files under fair use, which are not CC BY-SA, so Drift requests freely licensed images only and the article parser drops embedded images entirely.

The Gallery realm is the Art Institute of Chicago's open access collection, under CC0 1.0. Drift serves only works the museum itself marks as public domain, with the artist, date, medium and dimensions from its catalogue.

Drift can wander the articles behind the month's stories without using a news source. Wikipedia's editors maintain a current events portal, one page per day, made of links to encyclopedia articles.

Drift reads only the link targets: which articles are being pointed at, how often, and in which section. No headline or reporting is fetched, stored or shown. So “in the news” is the same CC BY-SA encyclopedia as the rest of the app, selected differently. There is a longer note on why it works that way.

Drift cuts an article into a card, works out which related pages to offer as threads, labels each thread as nearby or a tangent, and orders batches for variety so you do not get five near-identical pages in a row.

It does not write the facts. No sentence on a card is generated. Where a language model is involved it runs locally, is optional, and is limited to labelling and ordering material a person already wrote; switch it off and the app behaves the same. That rule is on the principles page.

If something on a card is wrong, it is most likely wrong at the source, and the better fix is to correct it there. Wikipedia can be edited by anyone, and a fix there reaches everyone rather than just Drift. Every card links to its article.

If Drift itself is at fault, for example misattributing something, mislabelling a thread, or showing an image it should not, let me know.