I did not say I have nothing else to learn, life is always changing. My comment was regarding the essence of the american political system and that has not changed. If the essence of the system changes then I will have more to learn, but if that essence changes it will be unavoidable for all to see. So far it has not changed, as far as I am aware.
Yes, someone announced the shooting in vegas before it occurred - but I see no reason to associate that with any change in the essence of the politics involved - the announcement did not appear to save many or any lives in any case.