Final answer:
The texts suggest the symbolism of light and darkness in literature, which can reflect changes, transitions, and emotional states within a narrative.
Step-by-step explanation:
The excerpts presented from various texts revolve around the themes of light and darkness, signifying transition, change, and emotional states. For instance, in one passage, the act of switching off the lights leads to a discussion about the life of a room and its emotional connection to its inhabitants. The characters anthropomorphize the room, giving it feelings and the ability to dislike, similar to the capabilities of a living being, which indicates deeper emotional undercurrents related to technology and human relationships.
In another, the lights going out signal the end of a day or a social event, as well as the close of certain interactions, which often reflect the mood or state of affairs in the scene. These moments are characterized by solitude, introspection, and sometimes unease or fear associated with darkness. The use of light and darkness in literature can be a powerful tool to convey underlying themes and character emotions.