Do you mean whether every man goes through different "parts" of life at the same age or not? I think each of us has his/her individual intellectual development. One may be mature at 18, and the other may remain a child at 30. But I suppose there are some average frontiers for every "stage" of life, and they may be pretty various in different countries.
It's all subjective, YoHf. ![Wink [;)]](/emoticons/emotion-5.gif)