Right, i don't think google displays the entire quora answer set, i see the google snippets of a quora answer set as an ad the click the quora link and read all the quora answers. I certainly don't trust that Google has actually extracted the complete set of valuable info from a quora page. Just like Stackoverflow i want to read many answers and many opinions. I would bet the when google presents a quora snippet, the quora page has MORE traffic.