Hindsight, or our ability to see our past clearly, is a learning function that, when damaged ... renders us unable to look at the past to guide ourselves through the present and into the future. Without this ability, we cannot learn from our mistakes. We cannot clean up the wreckage of our actions. We are locked into a cycle of repeating the same thing over and over again, expecting different results. This is commonly known as the definition of insanity.
