Many of the articles here are linked to as footnotes for other articles, creating a branched tree-like network of nodes of information. HTML links are one-way of course, in general you can’t easily navigate backwards up the tree to find the most relevant articles that link to a given page without resorting to opening up another tab or window and using a search engine, a fairly laborious process that most people don’t bother with.
For instance if A links to B to support some point made in A, but you only stumble onto B, you might not know anything about A but it might have valuable information that ties B into a larger web of knowledge and understanding.
With wordpress it’s easy to navigate backwards up the tree. At the bottom of each article is a comments section which contains “pingback” links to the articles that link to it. Very powerful. Check it out.
Also of course the title bar lists the main sections such as the global site index (chronologically ordered), the references (links to enduringly important information, needs updating I know! Use the contact form if you have suggestions) and the podcasts from the old radio show.