Clashing Importance or CI is a Foldit setting that controls how strongly clashes between atoms push the protein apart. Clashing importance varies between 0.0 and 1.0. At CI = 0.0, Foldit is content to let two atoms occupy the same space at the same time. At CI = 1.0, atoms are pushed apart when they even start to get close to each other. CI = 1.0 represents the "real world" importance of clashes. Clashing importance can be controlled manually using the slider in the Behavior Options menu. File:BehaviorOptions CI.png Clashing importance can also be set in recipes.