Answer:
I don't think that it's very effective.
Step-by-step explanation:
This saying has many flaws to it. It good to use it in settling small disputes between people, but something has big as dealing with the law is when using the concept should be thoroughly thought out. The reason being is that it can produce an opposite affect than what is right and what is wrong. For instances, if the concept were to be used to maintain law and order. say someone crashed into a house and it injured someone. They are taken to court settle the matter. The judge tells the person who crashed, "since you crashed into this house and injured a person, we will now give you a punishment of equal value. Such as also crashing into your house." This logic doesn't seem right and it just causes more damage.
The saying an eye for an eye and a tooth for a tooth, is something that shouldn't be taken lightly as it can cause a lot of trouble. Solving things like splitting a cookie would be when someone could use this saying.