"One thing I learned a long time ago as a prosecutor is that it's tough to get people to obey a law if there is not penalty for breaking it"

This quote by Roy Barnes speaks to the significance of effects in order to ensure that laws are followed. Without consequences, people are less most likely to obey the law. This is due to the fact that there is no incentive to follow the law if there is no charge for breaking it. Barnes, as a previous district attorney, most likely saw firsthand how hard it can be to get people to follow the law without repercussions. He likely likewise saw how efficient effects can be in getting people to follow the law. This quote works as a reminder that consequences are a fundamental part of the legal system which without them, it can be challenging to guarantee that laws are followed.