I find it interesting that the people who are most sure that they know what they are talking about...are wrong. Reread this thread and try to set aside your prior ideas about how the world works. In particular, the more casinos you visit, the more you realize that generalities don't work. Things you learn from visiting a few dozen casinos just can't necessarily be generalized to all casinos, and even in those few dozen, you may have overlooked something.
Bookmarks