 The debate over the economic dilemmas of Marxism came to the forefront after several articles by Conrad Schmidt in 1897 and Eduard Bernstein in 1898 were published in German Social-Democrat's journals.They questioned the validity of some Marxist tenets, pointed out the possible erroneous nature of materialism, and proposed to revise Marxism, eventually asserting that many of Karl Marx’s economic anticipations were not borne out by the expectations presented in "" and elsewhere.Bernstein and other Marxist revisionists addressed a number of issues that focused on the deficiencies of Marx’s economic predictions.