According to the mouse-over text  in http://xkcd.com/903/, “if you take any article (in Wikipedia), click on the first link in the article text not in parentheses or italics, and repeat, you will eventually end up in ‘Philosophy‘.” I just tried it. Here’s the sequence, which the phrases that create the first link, almost producing a series of Backus–Naur Form expressions.


I started with the old pen-and-paper role-playing game Gamma World, which I was looking up while writing about games, rules and authorship:

• Gamma World is a science fantasy role-playing game . . .
• Science fantasy is a mixed genre within speculative fiction . . .
• A cross-genre (or hybrid genre) is a genre in fiction . . . [1]
• A literary genre is a category of literary composition. Genres may be determined by literary technique . . . [2]
• A literary technique, literary method, literary devices, or literary motif is an identifiable rule of thumb . . .
• A rule of thumb is a principle . . .
• A principle is a law or rule . . .
• Law is a system . . . 
• System . . . is a set of elements . . . [3]
• In mathematics, an element or member of a set . . .
• Mathematics is the study of quantity . . .
• Quantity is a kind of property . . .
• In modern philosophy, mathematics and logic, a property is an attribute of an object . . .
• Modern philosophy is a type of philosophy . . .