  We present a critical assessment of what can be learnt from the present data
on inclusive polarized DIS. We examine critically some of the simplifying
assumptions made in recent analyses and study in detail the question of the
determination of the gluon, strange sea and valence quark polarized densities.
  We have also carried out a new NLO QCD analysis of the world data. We find an
excellent fit to the data and present our results for the polarized parton
densities.
