A few months ago, I had the opportunity to observe a focus group that was reviewing several new table games.   My area of expertise is the math and some of the technical constructs of a game.  I have to admit that if I have any weakness in game design it is in getting inside other Player's heads to see the game the way they do.  I like games that require you to think.  As soon as I sit down to play a new game, the math concepts of the game start going through my head and I try to figure out what the strategy is and/or how I would go about analyzing the game to get to that strategy.  In other words, my thought patterns about a new game are probably very different from the average Player.