A Liberty Mutual commercial shows a man pulling someone out of the street to prevent them from being hit by a car. The announcer said that was being "responsible," like their bank was being "responsible." But if this is the case, what would it say about their bank if the man rescued from the speeding car was a wanted serial killer? Or Adolf Hitler? Or how about that episode of Star Trek where Kirk goes back to the 1920's and saves a woman from getting hit by a car only to cause a temporal disaster? Would Liberty Mutual be "responsible" like Kirk? Or would they be "responsible" enough to obey the prime directive and let the woman die?