2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/23147Recently Francoual et al. claimed to have observed the dynamics of long-wavelength phason fluctuations in i-AlPdMn quasicrystals. We will show that the data reported call for a more detailed development of the elasticity theory of Jaric and Nelsson in order to determine the nature of small phonon-like atomic displacements with a symmetry that follows the phason elastic constants.18 pages, 0 figures, many additions, discussion addedMaterials Sciencetext