Often we speak of or hear of the ideology of karate-do to reach "perfection." Tho a loft goal and one we should keep it does not mean that perfection is attainable. Only the process of attainment is attainable.
It is the nature of the Universe as displayed in nature by the cycles of the Heaven and Earth, the Sun and Moon, the seasons, and so on that nothing reaches perfection of a static state of being. It is perfection to be imperfect at all moments of life. Our existence is one of continual fluctuations between extreme yang and extreme yin.
Perfection can be attained in the mind, spirit and body simply by accepting and living the changes that remain constant and imperfect. Even if perfection could be attained as we interpret it normally as understood in the FMA it is so transient that it changes to imperfection.
Perfection/imperfection, two sides on the one coin much like the symbolism of yang and yin in the symbol of the great Tai Chi. We can attain the perfection of understanding by allowing our lives and ways to flow with the currents of the Universe. Allowing it to lead, teach, and bring about a level of understanding and knowledge consummate to our individual and uniqueness until we pass from this existence into the void of the Tao.
Longevity is nothing more that the perfection of the one present moment as it flows with the currents of the Universe. We can understand that we are not able to resist the currents but we can achieve a mutual relationship with that current and influence it to a degree that will allow us to ride the waves through life.
Change is perfection and to flow with the changes is perfection. To achieve perfection in the FMA means to allow for the changes to teach us. Perfection in the FMA is simply an process of perfection that can become more as we practice and train. It will ebb and flow constantly as we move with the current of life and our ride can be simply wonderful.