Kongfrontation was a ride at the Universal Studios Florida theme park, in Orlando, Florida, the main attraction in the park's New York section. It opened as one of the original attractions at the park on June 7, 1990 and was closed on September 8, 2002. Revenge of the Mummy opened in its place on May 21, 2004.
This is because positive feedback stimulates your body to respond in the same direction as the stimulus, most often increasing instability.
If you mean positive feedback in the biological sense of the body's response to change, a fever is positive feedback because it's very presence causes it's increase. Positive feedback is when a change in the environment of your body triggers a reaction which increases the change.