2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/200930We show that during inflation, a quantum fluctuation becomes classical at all orders if it becomes classical at first order. Implications are discussed.4 pages, uses RevTeX4 LaTeX document class. v2: More details of the classicality argument, and an improved discussion of its implications. v3: matches version published in PLBAstrophysicsClassicality of the primordial perturbationstext