Einstein was a great fan of this technique. He said that: “To stimulate creativity, one muse develops the childlike inclination for play.” Researchers at the North Dakota State University agree. They conducted an experiment where they asked 76 undergraduates what they would do if college were cancelled for the day. The interesting bit was that half of them were encouraged to think as if they were seven years old. These students were found to give much more creative responses than the control group.