Symbolic greatness on Hadd punishments and its administrative barriers; philosophical and sociological research

Islamic criminal policy has a various kind of punishment that each of them has different logic and purpose. Hadd punishment is based on the criminal behavior and protect the social values for protect moral and social order. So this type of crimes، because of these are the most sever crimes، are punishable with the most severe punishment. Nevertheless، proof of this crime is too hard. Also، there are many drawbacks for use this criminal policy. So it is possible that they think there are conflicts. How it can be justified this conflict between severe punishment and emphasis on its implementation and then difficulty at the proof of these crime. Probably، sociological and philosophical thoughts can answer this question.