EditorialGuy - 8:07 pm on Jul 3, 2013 (gmt 0)
The important thing to remember is that an algorithm can't judge quality or authority. It can only perform actions based on signals of quality or authority--signals that, in turn, are based on parameters supplied by a human programmer or a black box.
We also need to remember that quality and authority are in the eye of the beholder. If a dozen of us tried to rank the best 10 search results from a set of 100 Google results for a popular keyphrase, we'd probably come up with a dozen different Top 10 lists.
In other words, it's unlikely that any of us will be completely satisfied with Google's search results for every query. The best we can hope for is to be more satisfied than dissatisfied.