There are several reasons why observing other gamblers as well as the activity at a prospective casino table is a helpful and advantageous thing to do.  At the very least, a simple walk-through on the casino lobby floor should be in order before starting any gambling session.  For gamblers who are in the process of learning a new game, or, who want to put their recently acquired knowledge of a new game to the test, observing an active table is a great way to reinforce and further strengthen one's skills.  How often have you studied for a test or memorized a series of activities/steps to the point of doing everything correct, only to find yourself freezing up when it it time to do the real thing?  Well, it is the same course when playing a table game in the casino for the first time.  Observation is a key ingredient in making your skills automatic.