Any Two Pages on the Web Are Connected By 19 Clicks or Less
The web is comprised of an estimated 14 billion web pages and 1 trillion web documents.
According to a Hungarian physicist Albert-László Barabási, it takes 19 steps or less to connect any random page to any other random page. And what’s more, no matter how big the Internet gets, the connection will stay the same.
Read more: http://blogs.smithsonianmag.com/science/2013/02/any-two-pages-on-the-web-are-connected-by-19-clicks-or-less/