[9급 국가직 영어 2011년 14번]

One way to accelerate the flow of new ideas is to be put in difficult situations where you're likely to fail. When we fail to do something, we feel frustrated and we begin trying out other behaviors. Many ideas compete vigorously, greatly enhancing the creative process. Say you start to turn a doorknob that has always turned easily. It won't move. You turn the knob harder. Then you pull it up or push it down. Maybe you wiggle it. Eventually, you may shove or kick the door. These efforts from established behaviors will probably lead to new solutions. Creativity is an extension of                   .