The passion to win something threatens to obliterate the levity proper to a game. An important distinction emerges here. In games of pure chance the tension felt by the player is only feebly communicated to the onlooker. In themselves, gambling games are very curious subjects for cultural research , but for the development of culture as such we must call them unproductive…..The picture changes as soon as play demands application, knowledge, skill, courage, and strength.