The logic of dialectics dictates that everything carries within itself the seeds of its own destruction. The basis of Web search engines is Website Authority and Web page authority, determined by age and incoming links. That is also the basis for The killer search engine bug. That's the short version. If you haven't figured it out: Older is not necessary better. An older description (say 1960) of how a computer works and what it can do, is not better than a new one. But the authority algorithm favors older pages. Bigger is not necessarily better either. Apple vs IBM mainframes. But authority algorithms favor the bigger Web sites. See The killer search engine bug for some of the gory details.