Here's what I am thinking....sometimes I will hear Matt Cutts or another Google engineer say something that I feel deep down in my gutt isn't true. Here is one example where Matt Cutts says it doesn't matter if you use a sub domain or a sub directory >> Should I structure my site using subdomains or subdirectories? - YouTube
I just have this feeling that what hes saying in that video, isn't the full truth. I always advise clients against using a sub domain, but the way Matt makes it sound, it doesn't matter.
Another example is this video>> What percentage of PageRank is lost through a 301 redirect? - YouTube Here Cutts tells us that 301s doesn't dissipate link equity. This is a complete reversal of what hes said in the past.
Maybe the term "lieing" is a bit strong but I do seriously question why Google says the things they choose to say. What are ya'lls thoughts?