Before them, the first great civilizations also knew the secrets of acoustics. In fact, in the Middle Ages, some effects other than sound were revived, such as light, which, at certain times (solstices, the name day of the saint to whom the temple was dedicated, etc.), fell on a predetermined point, illuminating the altar, illuminating a specific chapitel—a detail which, like the "special effects" of the time, as I call them, acted precisely with that intention, opening that channel that would allow the faithful to have another kind of sensory experience.