2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47573The original version of this paper commented on a paper by Jaffe, Jin, and Tang (hep-ph/9710561). That paper has been revised, and my original comment no longer applies to the revised version. The original version of my comment (hep-ph/9801217v1) provides a simple argument that two-particle correlations in parity-invariant fragmentation cannot provide a measurement of the helicity of the fragmenting quark.The comments made in the original version of this paper concerning (hep-ph/9710561) no longer apply to its revised versionHigh Energy Physics - Phenomenologytext