PageRank is one of more than 200 metrics Google uses in its search engine. Your presumption that it is the foundation, or even the most important metric, is unwarranted.
Well, generally how search works now was actually one of the first things I learned when I started working for Google, but my point was that you don't know and are just making things up.
Ok maybe you do know. However, it's odd that you bring up that you work at Google and then add nothing new to the discussion (everybody knows about the 200 metrics). How about: "You're wrong, PageRank has never been the foundation of Google search"?
