I was assigned to read the "Dissolving the Magic Circle" for my class about play.  This article is about a situationist's approach to play.  The first lesson this article points out is that we need to adopt a constant attitude of liminoid defined as the freeing and transformative moments of play when the normal rules and roles of a community are relaxed.  Situationist games do not respect the boundary of the "magic circle" that Huizinga introduced.  The idea here is to attempt to give a transformative potential to normal life.

The second lesson that Situationists point to is that the competitive nature of play should be questioned.  For situationist, competition is also a ethical question that must be addressed.  

The third lesson is that within cities there is a psychogeoraphic current.  These currents need to be mapped and used to enhance a public consciousness of play in our urban environment.  This leads to the concept that games should not so much be rule based algorithms, but environments to be explored.   Games are now commonly being used to train soldiers for urban warfare.