Tumin challenged the Davis–Moore hypothesis of social stratification  with his paper "Some principles of stratification: a critical  analysis".[5][6] Tumin took Davis–Moore to imply that social  stratification was mostly inevitable and provided a positive function  for society. He analyzed the arguments of Davis and Moore and found them  wanting in a number of respects.[6] In a reply to Tumin's paper, Davis  stated that his ideas seek to explain inequality, rather than justify  it. Davis also accused Tumin of a number of errors.[7]  Tumin's 1967 book Social Stratification: The Forms and Functions of  Inequality was widely used as a textbook and was re-issued in 1985.[1]