The life like a yo-yo

1. All in the life is like a yo-yo, up and dowm, all has goods times and bad times.
2. This concept can be aplied in all aspect of the life (sports, religions, fads, politics, economy, music, dance, etc).
3. All in the life is changing all the time, for that reason, in a period of time, something is more catchy tnan other.
4. Something changes quickly, and others change slowly. All changes.
5.  The best example for this concept is the fad.

               That our parents used yesterday, I am not used today, but our children could be used tomorrow.