The Court therefore has recognized that a punishment may violate the Eighth Amendment if it is contrary to the evolving standards of decency that mark the progress of a maturing society. In evaluating a punishment under this test, we have looked not to our own conceptions of decency, but to those of modern American society as a whole in determining what standards have evolved, and thus have focused not on the subjective views of individual Justices, but on objective factors to the maximum possible extent." It is this type of objective factor which forms the basis for the tripartite proportionality analysis set forth in "Solem".