Internal and external links on a page should be automatically generated page attributes (as well as authors, date)
Filter knowledge graph (which includes hierarchy) by attribute
"Knowledge graph" should have various filters, order bys, and views, like a normal/list view, an outline view, a graph view, a table view (including attributes), etc - we should probably allow for advanced keyword searching too, including on the page
Take inspiration from Obsidian's metadata search functionality
Make this embeddable into pages as well, with default allowable search methods (like show ordering by date as an option) and optional default values (only show from 2019 to 2020)
Filter entire website by multiple criteria?
Multiple intervention levels—overall area (air quality), specific method (air filter), specific product ($250 air purifier)