Comments on methods of analyses of nucleon-nucleus scattering data

Methods of analysis of nucleon-nucleus scattering data have progressed markedly over the past 50 years, yet many analyses of scattering data still use prescriptions specified at various stages of that progress. But the assumptions made or inherent in those analyses are poorly justified and most are no longer necessary to facilitate evaluations. We investigate some of those assumptions and highlight deficiencies and the uncertainties they may make in data analyses.