Ben has had problems with the pipes in his apartment. First, he had a clog in his bathroom sink, and then two months later, his garbage disposal in the kitchen sink clogged. Ben's superintendant told him he was not adequately flushing the debris from his pipes. She suggested that he run the water a little longer and visualize the debris (be it carrot peelings or toothpaste) traveling through the pipes all the way out to the sewer connection in the street. Using this technique, Ben has had no more clogs. The superintendant's suggestion involved