the ruling in miller v. california is a landmark decision by the u.s. supreme court in which the court redefined its definition of what constitutes obscenity. this definition has been translated into what is referred to as the miller test, a test for determining whether speech or expression can be labeled obscene, in which case the material is not protected by the first amendment and therefore becomes illegal. the miller test was developed in 1973 and has three parts, what are they?