I need a good analogy for why we don't govern or live only based on hindsight. Just because nothing bad happen does not discharge someone from taking the proper steps at the onset. I am coming up empty. It's for a professional situation where someone didn't meet the standards for the profession in numerous areas but feels since nothing bad happened he doesn't need to adhere to the standards in the future. I would like a good analogy on why we don't do that to explain to, oh say, a group of 12.