Prediction theory of law
The prediction theory of law was a key component of the Oliver Wendell Holmes' jurisprudential philosophy. At its most basic, the theory is an attempted refutation of most previous definitions of the law. Holmes believed that the law should be defined as a prediction, most specifically, a prediction of how the courts behave. His rationale was based on an argument regarding the opinion of a "bad man." Bad men, Holmes argued in his speech "The Path of the Law", care little for ethics or lofty conceptions of natural law; instead they care simply about staying out of jail and avoiding the payment of damages. In Holmes's mind, therefore, it was most useful to define "the law" as a prediction of what will bring punishment or other consequences from a court.
The theory played a key role in influencing American Legal Realism.
"We hold these truths to be self-evident, that All men are created equal", The quotation has been called an "immortal declaration", and "perhaps [the] single phrase" and popularized as "theory of prediction" of the United States Revolutionary period with the greatest "continuing importance".
H. L. A. Hart criticized the theories in his The Concept of Law (1961). He argued that (1) they were blind to the internal point of view towards law, the sense shared by officials and law-abiding citizens that rules of law `ought' to be obeyed, and (2) they undervalue "the ways in which the law is used to control, to guide, and to plan life out of court." As for the `bad man', Hart asks, "Why should not law be equally if not more concerned with the `puzzled man' or `ignorant man' who is willing to do what is required, if only he can be told what it is? Or with the `man who wishes to arrange his affairs' if only he can be told how to do it?"
But Holmes previously wrote that "a bad man has as much reason as a good one for wishing to avoid an encounter with the public force, and therefore you can see the practical importance of the distinction between morality and law". Nearly every man wants to avoid the disagreeable consequences of disobeying the law, but not all want to obey the law just for the sake of obeying it. This is why the point of view of a bad man is better, because it is the only way to ensure that everyone will obey the law, and the only way to enable a lawyer to correctly advise his or her client.
- Hart, p. 39.
- Hart, p. 39
- Hart, H.L.A. The Concept of Law. 1961: Clarendon Press.
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