2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/8841We make comments on the letter by Barrow [{\it Class. Quantum Grav.} {\bf 21} (2004) L79] since we cannot observe a singularity for $p(t)$ as $t\to t_s$. Instead, there might be a singularity for $ρ(t)$ for $t\sim 0$ case.4 pages, 3 figuresAstrophysicstext