The real understanding

I many a times think about the real expectation of 'understanding' precisely 'good understanding'. Is it just to stand under the roof of established facts and figures accepting hereditary way of thinking and dwelling the present and future to keep the tradition breathing or it talks about adapting continiously and effectively? When some one says I have good understanding then what are the parameters to judge the same? Generally maturity in understanding is considered directly proportional to age. To some extend it may be true but I think its very relative. See from the point of view of a young generation, they consider the older generation to be less understanding for not respecting their freedom. Similary the view point changes for a aged individual who considers the younger understanding less mature. I strongly believe that the only fact of life is "There is no rule". People want to jump very fast from hypothesis to theorem and in this hurry they lack to experiment and study more sample cases, highly required for conclusions. Probably I should write more on the same but I think I have sparked my thought and if i continue to put more of my words, I would be moving towards approacing a rule. This will canabalize my own view point. I would request the reader to take the discussion ahead from here and share with me the relative view point for me to learn and appreciate.