Original sentence: Although many people have assumed that the inspiration for Second Life originated from Rosedale's exposure to Neil Stephenson's novel Snow Crash,  he has suggested that his vision of virtual worlds predates that book and that he conducted some early virtual world experiments during his college years at the University of California San Diego, where he studied physics
Edited sentence: Although many people have assumed that the inspiration for Second Life originated from Rosedale's exposure to Neil Stephenson's novel Snow Crash, he has suggested that his vision of virtual worlds predates that book and that he conducted some early virtual world experiments during his college years at the University of California San Diego, where he studied physics