Here's a fun little project that puts that old XKCD comic to test: Repeatedly navigating to the first non-parentheses non-italics link in a wikipedia article will eventually lead you to Philosophy. It starts at a random article (but you can totally choose its starting point by changing line 64.
When I hand-tested this myself many years ago when I should've been paying attention in school, it definitely worked. Sadly, it seems to no longer be the case - although now, it seems as though all articles eventually lead to Mathematics... which I suppose also works.
Link to original comic (hover over the image to see the alt-text):