Reference

The agencies whose data this work depends on, and the geographies it describes.

Research inherits the limits of the data it runs on. These pages record the organizations that publish that data and the geographies it covers, so a dependency is a page that can be linked and argued with rather than a line in a source list.

Each entry states where it is used on this site, what makes it usable, and the limit that has to be carried when it is. That last part is the reason these exist. A margin of error that widens with population, or an industry classification that was revised between two years, is not a footnote to a finding built on it.

These pages are the graph's actors and places, which is why they carry a node type when most of the site does not. They are reference material about other bodies, not claims about this practice.