<i>Doesnt sound like a very knowledgeable headmaster. Larry invented PageRank and did a respectable implementation of it before he had other engineers take it over.</i><p>Here is a video, <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=o4MwTvtyrUQ" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=o4MwTvtyrUQ</a>, of everyday people trying to explain what a browser is, a browser, the most important piece of (general use) software developed since the word processor or spreadsheet.<p>Try asking the general public what PageRank is, much less who invented it, and be prepared for a montage of silent deer-in-headlights responses with the occasional stammering about librarians for good measure :)