Also reminds me of how if you click the second link of a Wikipedia article (and the second link of every subsequent page) you'll always end up on Philosophy
EDIT: I suppose one disproof would be the existence of articles that don't have a second link.
Stems from https://xkcd.com/903/ alt-text. Might not be the original source, but that's where I know it from.
At "Branches of science" it links back to "Formal science".
Keep in mind, you need to click on "first non-parenthesized, non-italicized link" in the article text itself.