There doesn't seem to be anyone that really agrees on the specifics of LSI and the co occurrence matrix . What we can be certain of is Google is not regressing with it's technology. Simple tests can be performed to see how human-like this engine has become. You have heard the phrase "There is no free lunch" ?! For those that are familiar with this phrase it's meaning symbolizes to look for the hidden negatives in sweet deals. To me, that phrase represents a concept. What I mean is Google knows there are words within the phrase that all stand alone with their own meanings and purposes within the English language...
Yet when we look at the result pages that Google delivers we see webpages about...
Nicely done and evidence we are moving towards artificial intelligence that truly is awesome.