That's true, there are those that can calmly absorb there situation without letting anyone know about it in worst situation per say, and even when it comes to a best situation they don't even feel overly excited they will still stood still without any one getting to know about it intentionally, trust me this kind of sets of people are best when it comes to gambling, while there are also those that easily gets carried away uncontrollably by emotions whether in best or worst situation they will always look for a shoulder to lean on for console or celebration, such people are those can easily be controlled by the system just as you have made mentioned.