State. How Google Finds Your Needle in the Web's Haystack. As we'll see, the trick is to ask the web itself to rank the importance of pages...
Imagine a library containing 25 billion documents but with no centralized organization and no librarians. In addition, anyone may add a document at any time without telling anyone. You may feel sure that one of the documents contained in the collection has a piece of information that is vitally important to you, and, being impatient like most of us, you'd like to find it in a matter of seconds.
How would you go about doing it? Posed in this way, the problem seems impossible. Ruby Quiz. How to Think Like a Computer Scientist.