While the keyhole of history has had insufficient time to bring the failed launch of the American Health Care Act (AHCA) into focus, it's not too soon to begin learning some of the lessons it can teach us. Legislative efforts have a lifespan but our health care system does not. So whether we are still rejoicing or recriminating, let's take a look at some timeless principles we can apply to the ongoing effort to improve health care in the United States.