  Povh and Walcher have written a paper entitled "The end of the nucleon-spin
crisis" [arXiv:1603.05884]. But there is no such crisis. What appeared to be a
spin crisis in the parton model, 28 years ago, was a consequence of a
misinterpretation of the results of the famous European Muon Collaboration
experiment on polarized deep inelastic scattering. It would thus seem that Povh
and Walcher have invoked a somewhat dubious argument based on hadronic
fluctuations of the photon in order to resolve a non-existent problem.
