`   Just a quick observation regarding this statement in the article: ``Many of Dostoyevsky's novels, such as Crime and Punishment, have covered issues pertinent to existential philosophy while simultaneously refuting the validity of the claims of existentialism (notably the ``superman`` theory advocated by Nietzsche.)``  Has it never troubled anybody that Dostoyevsky refuted Nietzsche's ``superman`` theory 20 years before Nietzsche ever published it?`