That said, I think also that some elements of our behavior are so ingrained or habitualized that it is very unlikely that reformation will be succesful. Personally, I believe violence is one of those behaviors that can take root and be so difficult to change that it is near impossible without a large measure of investment. So for me, individuals who express extreme levels of violence probably exceed the investment we place in our training.
Flipping that round then and thinking about Aikido from a self-defence point of view, is the same true in cases of assault? Would an extremely violent attack overcome Aikido in the street, even when used by someone of many years training and experience? What are the connections (if any) between the limitations of Aikido as an educational system of moral behaviour and the limitations of Aikido as self-defence?