Wrote a paper on this for a network theory class back in college and came to pretty much the same conclusion. Pages tend to lead to “funnels” of similar general topics, such as Earth, science, etc. and they all make their way upward into philosophy, which is the study of thinking, since thinking is at its core how we perceive the world.

Interestingly there’s two distances from philosophy that pages tend to hover around, the closer one of which is more full of technology and science stuff while the farther one is mostly places. It’s a pretty interesting deep dive