Larry thought Sergey was arrogant. Sergey thought Larry was obnoxious. But their obsession with backlinks just might be the start of something big. credit William Mercer McLeod Page came up with the concept of weighted ranking, while Brin (left) figured out the math. It began with an argument. When he first met Larry Page in the summer of 1995, Sergey Brin was a second-year grad student in the com