The course of history is the backward wave pushing the front wave. No one will always stand on the cusp of the wind. There will be Napoleon defeating Waterloo and many famous reform figures. The conclusions that cannot be derived from the above are:. ['It is normal that no one can stand on the cusp forever.', 'It is normal for many well-known reform figures to become silent.', 'The course of history will eliminate characters like Napoleon.', 'It is extremely unusual for many famous figures to disappear on the stage of reform.']