Thoughts about Changes in Karate

Someone recently remarked that karate-do never changes. I don't know whether this is entirely accurate. I believe that each of us needs to change our practice of karate, as we change (grow older, suffer injuries, change focus, work with different individuals, etc.). As we learn more about karate, we bring that understanding to our kata. Or, vice verse. Our karate should continue to grow and develop -- part of "personalizing." Conversely, if we don't seek development in karate, then our training becomes stagnant.