We all know that a site/page needs ton of backlinks from unique content to rank higher in google SERP. Using spinning tools we can automatically generate lots of "unique" spun articles from the original one, especially when you remove the original words / restructure the paragraphs / remove several sentences etc. But as we all know, these "unique" articles hardly make sense if it's generated automatically. So my question is, will backlinks from these articles help in rankings? Is google smart enough to determine if an article make sense? How does google know if one article is of good quality?