You CAN teach an old dog new tricks IF the dog is curious and teachable. The pompous self-satisfied old dog?Fuggeddaboutit, right?

If you're an "old dog" do you still like to learn/improve? If you aren't well then when you are do you s'pose you will  close up shop and opt out because you already know everything or d'ya think you will never be too egotistically arrogant to want to learn more and so you will never want to stop?