抄録
The Wright brothers received the honor of being "the inventors of the airplane" by developing an airplane which really could carry a person. However, until their success, many people attempted to fly in the sky but all failed. However, two people were successful at flying a model airplane before the success of the Wright brothers. If their development had continued, it is possible that their designs could have come into practical use as passenger aircraft and that the technology would have been passed on to their successors. Invention without practical implementation is worthless. However, generally only a small minority of inventions are put to practical use. Here I will explore the conditions which lead to implementation of inventions, focusing on the case of model airplanes, and why these two inventions didn't achieve success.