clipped from: www.openspaceworld.com   
Finally we come to the One Law of Open Space. It is a law only in the sense that all participants must observe it or the process will not work. We call it the Law of Two Feet. Briefly stated, this law says that every individual has two feet, and must be prepared to use them. Responsibility for a successful outcome in any Open Space Event resides with exactly one person -- each participant. Individuals can make a difference and must make a difference. If that is not true in a given situation, they, and they alone, must take responsibility to use their two feet, and move to a new place where they can make a difference. This departure need not be made in anger or hostility, but only after honoring the people involved and the space they occupy. By word or gesture, indicate that you have nothing further to contribute, wish them well, and go and do something useful.