How does change influence the ethics we use to relate to each other? Do our ideas of ethics change or evolve over time through history and culture? And if so, how do such changes affect our ethical relationships? Or do certain changes in our environment call for a situational ethics? (For example, is it okay to steal if you are starving? Many pundits in the media justified the actions of those who took food, clothes and other goods without paying for them after suffering the disaster of Hurricane Katrina.) Or are such situational ethics merely an excuse for immoral behavior?