John Battelle, co-founder of Wired magazine, wrote of Page that he had reasoned that the entire Web was loosely based on the premise of citation after all, what is a link but a citation? If he could devise a method to count and qualify each backlink on the Web, as Page puts it the Web would become a more valuable place. Battelle further described how Page and Brin began working together on the project:
At the time Page conceived of BackRub, the Web comprised an estimated 10 million documents, with an untold number of links between them. The computing resources required to crawl such a beast were well beyond the usual bounds of a student project. Unaware of exactly what he was getting into, Page began building out his crawler.
The ideas complexity and scale lured Brin to the job. A polymath who had jumped from project to project without settling on a thesis topic, he found the premise behind BackRub fascinating. I talked to lots of research groups around the school, Brin recalls, and this was the most exciting project, both because it tackled the Web, which represents human knowledge, and because I liked Larry.
Brin and Page originally met in March 1995, during a spring orientation of new computer Ph.D. candidates. Page, who had already been in the program for two years, was assigned to show some students, including Brin, around campus, and they later became good friends.
To convert the backlink data gathered by BackRubs web crawler into a measure of importance for a given web page, Brin and Page developed the PageRank algorithm, and realized that it could be used to build a search engine far superior to existing ones. It relied on a new kind of technology that analyzed the relevance of the back links that connected one Web page to another. In August 1996, the initial version of Google was made available, still on the Stanford University Web site.
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