2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28193In two recent interesting letters evidence was presented for the existence of a growing dynamic correlation length when we approach the glass transition from the liquid phase (a similar divergence is present also in the off-equilibrium dynamics below $T_c$). Here we would like to point out that this phenomenon can be easily predicted using the replica approach.1 page, 1 eps figure, submitted to prlStatistical MechanicsDisordered Systems and Neural Networkstext