Rather Than splitting the PageRank equally between all links je a page, some links are valued more than others. There’s speculation from patents that Google switched from a random surfer model (where a râper may go to any link) to a reasonable surfer model (where some links are more likely https://leedirectory.com/listings13160895/5-%C3%A9l%C3%A9ments-essentiels-pour-r%C3%A9f%C3%A9rencement-google