In the late 1960s as a 3rd grader I was fascinated with the paper airplanes made by the older students during recess. At one point I came across an plane that had been left on the field and reverse engineered it. It was not until decades later that I actually saw the Nakamura Lock instructions in print. It has been a joy to show at least three generations of children how to make this plane. It flys well, is reasonably robust, and just a joy to make and play with. I recall my younger brother and I flying them at night at my parents house, just having a nice summer evening of simple play.