Google's tenth anniversary seems to have tweaked Hubert Chang into posting this video. He claims to have co-invented Google's PageRank formula, business model and more along with Sergey Brin and Larry Page in 1997. But Chang says he chose to complete his Ph.D. at New York University instead of dropping out to found a startup. He also claims to have passed on a chance to put his name on a conference paper — again to remain focused on his Ph.D. thesis. By the time Chang got his sheepskin in 2002, he says, Page and Brin didn't respond to his enquiries to join the company. After the jump, a second, more produced video from Chang in which he gives his version of the Google creation myth.Click to view