When the tyrant has disposed of foreign enemies by conquest or treaty, and there is nothing more to fear from them, then he is always stirring up some war or other, in order that the people may require a leader. – Plato
It is just called Continuing Legal Education. You can go to lectures, you can even listen to tapes on airplanes – they want you to stay current. So you do have to stay current to maintain your license even if you are not practicing. – Frank Shorter