Open a Wikipedia article – any article, it doesn’t matter. Here, try the article about Jasper Fforde. Click on the first link in the main article. Skip links that are in parentheses or italics, and don’t follow anything that leads outside Wikipedia. In the Jasper Fforde article, that’s the link to his first novel, The Eyre Affair. Keep doing the same thing in each article that comes up. Eventually you will get to the Wikipedia article about Philosophy. It’s about 20 clicks from the Jasper Fforde article. Here’s the fun part. The same thing will happen regardless of what article you start...